1 Million+ Step-by-step solutions

It is expected that aerobic square dancing during the 30-minute recess at an elementary school will help fight childhood obesity.

a. State the research question.

b. Identify the control and experimental group(s).

c. Explain how you would randomly assign participants to groups.

d. State the hypotheses (H_{0} and H_{1}).

e. Discuss the criteria for accepting or rejecting the hypotheses.

Recent findings suggest that residents at a senior living facility may experience fewer depressive symptoms when they participate in pet therapy with certified dogs for 30 minutes per day.

a. State the research question.

b. Identify the control and experimental group(s).

c. Explain how you would randomly assign participants to groups.

d. State the hypotheses (H_{0} and H_{1}).

e. Discuss the criteria for accepting or rejecting the hypotheses.

A chain of retail stores has been experiencing substantial cash shortages in cashier balances across 10 of their stores. The company is considering installing cashier security cameras.

a. State the research question.

b. Identify the control and experimental group(s).

c. Explain how you would randomly assign participants to groups.

d. State the hypotheses (H_{0} and H_{1}).

e. Discuss the criteria for accepting or rejecting the hypotheses.

Anytown Community wants to determine if implementing a neighborhood watch program will reduce vandalism incidents.

a. State the research question.

b. Identify the control and experimental group(s).

c. Explain how you would randomly assign participants to groups.

d. State the hypotheses (H_{0} and H_{1}).

e. Discuss the criteria for accepting or rejecting the hypotheses.

Employees at Acme Industries, consisting of four separate buildings, are chronically late. An executive is considering implementing a get out of Friday free lottery; each day an employee is on time, he or she gets one token entered into the weekly lottery.

a. State the research question.

b. Identify the control and experimental group(s).

c. Explain how you would randomly assign participants to groups.

d. State the hypotheses (H_{0} and H_{1}).

e. Discuss the criteria for accepting or rejecting the hypotheses.

The Acme Herbal Tea Company advertises that its product is “. . . the tea that relaxes.”

a. State the research question.

b. Identify the control and experimental group(s).

c. Explain how you would randomly assign participants to groups.

d. State the hypotheses (H_{0} and H_{1}).

e. Discuss the criteria for accepting or rejecting the hypotheses.

Professor Madrigal has a theory that singing improves memory.

a. State the research question.

b. Identify the control and experimental group(s).

c. Explain how you would randomly assign participants to groups.

d. State the hypotheses (H_{0} and H_{1}).

e. Discuss the criteria for accepting or rejecting the hypotheses.

Mr. Reed believes that providing assorted colored pens will prompt his students to write longer essays.

a. State the research question.

b. Identify the control and experimental group(s).

c. Explain how you would randomly assign participants to groups.

d. State the hypotheses (H_{0} and H_{1}).

e. Discuss the criteria for accepting or rejecting the hypotheses.

Ms. Fractal wants to determine if working with flashcards helps students learn the multiplication table.

a. State the research question.

b. Identify the control and experimental group(s).

c. Explain how you would randomly assign participants to groups.

d. State the hypotheses (H_{0} and H_{1}).

e. Discuss the criteria for accepting or rejecting the hypotheses.

A manager at the Acme Company Call Center wants to see if running a classic movie on a big screen (with the sound off) will increase the number of calls processed per hour.

a. State the research question.

b. Identify the control and experimental group(s).

c. Explain how you would randomly assign participants to groups.

d. State the hypotheses (H_{0} and H_{1}).

e. Discuss the criteria for accepting or rejecting the hypotheses.

A survey was conducted in Professor Lamm’s class and Professor Milner’s class. The question that students responded to is, “How many siblings do you have?”

Data set: Ch 03 – Exercise 01.sav

Codebook

Variable: Class

Definition: Class designation

Type: Categorical (1 = Prof. Lamm, 2 = Prof. Milner)

Variable: Siblings

Definition: Number of siblings

Type: Continuous

a. Run descriptive statistics and a histogram with a normal curve for Siblings for the whole data set.

b. Run descriptive statistics and a bar chart for Class for the whole data set.

c. Run descriptive statistics and a histogram with a normal curve for Siblings for members of Professor Lamm’s class only.

d. Run descriptive statistics and a histogram with a normal curve for Siblings for members of Professor Milner’s class only.

While waiting in line to donate blood, donors were asked, “How many times have you donated before?” The researcher recorded their gender and number of prior donations.

Data set: Ch 03 – Exercise 02.sav

Codebook

Variable: Gender

Definition: Gender

Type: Categorical (1 = Female, 2 = Male)

Variable: Donated

Definition: Total number of blood donations given before today

Type: Continuous

a. Run descriptive statistics and a histogram with a normal curve for Donated for the whole data set.

b. Run descriptive statistics and a bar chart for Gender for the whole data set.

c. Run descriptive statistics and a histogram with a normal curve for Donated for Females only.

d. Run descriptive statistics and a histogram with a normal curve for Donated for Males only.

You want to know if typing proficiency is associated with better spelling skills. You administer a spelling test consisting of 20 words to the students in a classroom. At the bottom of the sheet, there is a question: Can you type accurately without looking at the keyboard?

Data set: Ch 03 – Exercise 03.sav

Codebook

Variable: Looker

Definition: Does the student look at the keyboard to type?

Type: Categorical (1 = Looks at keyboard, 2 = Doesn’t look at keyboard)

Variable: Spelling

Definition: Score on spelling test

Type Continuous

a. Run descriptive statistics and a histogram with a normal curve for Spelling for the whole data set.

b. Run descriptive statistics and a bar chart for Looker for the whole data set.

c. Run descriptive statistics and a histogram with a normal curve for Spelling for “Looks at keyboard” only.

d. Run descriptive statistics and a histogram with a normal curve for Spelling for “Doesn’t look at keyboard” only.

You are interested in the length of time it takes for individuals to complete their transaction(s) at an ATM. You use a stopwatch to record your unobtrusive observations and gather two pieces of information on each person: gender and the length of his or her ATM session (in seconds).

Data set: Ch 03 – Exercise 04.sav

Codebook

Variable: Gender

Definition: Gender

Type: Categorical (1 = Female, 2 = Male)

Variable: ATM sec

Definition: Number of seconds spent at ATM

Type: Continuous

a. Run descriptive statistics and a histogram with a normal curve for ATM sec for the whole data set.

b. Run descriptive statistics and a bar chart for Gender for the whole data set.

c. Run descriptive statistics and a histogram with a normal curve for ATM sec for Female only.

d. Run descriptive statistics and a histogram with a normal curve for ATM sec for Male only.

You are interested in finding out how many units students are enrolled in. You conduct a survey of 40 students and record two pieces of information: the degree (level) the student is working on (bachelor’s, master’s, doctorate) and total number of units he or she is taking this term.

Data set: Ch 03 – Exercise 05.sav

Codebook

Variable: Degree

Definition: Highest degree the person has

Type: Categorical (1 = Bachelor’s, 2 = Master’s, 3 = Doctorate)

Variable: Units

Definition: Current number of enrolled units

Type: Continuous

a. Run descriptive statistics and a histogram with a normal curve for Units for the whole data set.

b. Run descriptive statistics and a bar chart for Degree for the whole data set.

c. Run descriptive statistics and a histogram with a normal curve for Units for Bachelor’s degree only.

d. Run descriptive statistics and a histogram with a normal curve for Units for Master’s degree only.

e. Run descriptive statistics and a histogram with a normal curve for Units for Doctorate only.

You stand at a register in a hospital cafeteria; for each patron, you gather two pieces of information: professional role (nurse, doctor, other), as indicated on his or her badge, and the amount of his or her bill (as shown on the register).

Data set: Ch 03 – Exercise 06.sav

Codebook

Variable: ProfRole

Definition: Professional role

Type: Categorical (1 = Nurse, 2 = Doctor, 3 = Other)

Variable: Bill

Definition: Total as shown on the register

Type: Continuous

a. Run descriptive statistics and a histogram with a normal curve for Bill for the whole data set.

b. Run descriptive statistics and a bar chart for ProfRole for the whole data set.

c. Run descriptive statistics and a histogram with a normal curve for Bill for Nurse only.

d. Run descriptive statistics and a histogram with a normal curve for Bill for Doctor only.

e. Run descriptive statistics and a histogram with a normal curve for Bill for Other only.

You recruit a group of people who agree to report their total email counts (sent + received) for 30 days. Each participant also completed a survey regarding his or her employment status (Full-time, Part-time, Unemployed).

Data set: Ch 03 – Exercise 07.sav

Codebook

Variable: Employ

Definition: Employment status

Type: Categorical (1 = Full-time, 2 = Part-time, 3 = Unemployed).

Variable: Emails

Definition: Total number of emails sent and received for 30 days

Type: Continuous

a. Run descriptive statistics and a histogram with a normal curve for Emails for the whole data set.

b. Run descriptive statistics and a bar chart for Employ for the whole data set.

c. Run descriptive statistics and a histogram with a normal curve for Emails for Full-time only.

d. Run descriptive statistics and a histogram with a normal curve for Emails for Part-time only.

e. Run descriptive statistics and a histogram with a normal curve for Emails for Unemployed only.

To determine if dancing enhances mood, you recruit 100 voluntary participants. You randomly select 50 and give them seven free dance lessons; the other 50 get no dance lessons. After the seventh class, you administer the Acme Happiness Scale Survey (AHSS) to all 100 individuals; this survey renders a score ranging from 1 to 30 (1 = Extremely unhappy . . . 30 = Extremely happy).

Data set: Ch 03 – Exercise 10.sav

Codebook

Variable: Dance

Definition: Dance class membership status

Type: Categorical (1 = Dancer, 2 = Nondancer)

Variable: AHSS

Definition: Score on Acme Happiness Scale Survey

Type: Continuous (1 = Extremely unhappy . . . 30 = Extremely happy)

a. Run descriptive statistics and a histogram with a normal curve for AHSS for the whole data set.

b. Run descriptive statistics and a bar chart for Dance for the whole data set.

c. Run descriptive statistics and a histogram with a normal curve for AHSS for the Dancers only.

d. Run descriptive statistics and a histogram with a normal curve for AHSS for the Nondancers only.

The administrator of a two-ward hospital randomly selects one ward wherein the nurses will be assigned to tend to two patients each; nurses in the other ward will tend to four patients each. Over the course of a month, upon discharge, each patient will complete a nursing care satisfaction survey, which renders a score ranging from 1 to 100 (1 = Very unsatisfied . . . 100 = Very satisfied).

Data set: Ch 03 – Exercise 09.sav

Codebook

Variable: Ward

Definition: Ward number

Type: Categorical variable (1 = 2 patients per nurse, 2 = 4 patients per nurse)

Variable Nsatisfy

Definition: Patient’s nurse satisfaction score

Type: Continuous

a. Run descriptive statistics and a histogram with a normal curve for Nsatisfy for the whole data set.

b. Run descriptive statistics and a bar chart for Ward for the whole data set.

c. Run descriptive statistics and a histogram with normal curve for Nsatisfy for the 2 patients per nurse ward only.

d. Run descriptive statistics and a histogram with a normal curve for Nsatisfy for the 4 patients per nurse ward only.

The members of an exercise walking group agree to partake in your study; you randomly give half of the group walking music in a major key, and the others are given walking music in a minor key. Each participant can walk as often and for as long as he or she likes. The participants will record and submit the total number of minutes that they walked in a week.

Data set: Ch 03 – Exercise 08.sav

Codebook

Variable: Music Key

Definition: Music key

Type: Categorical (1 = Major, 2 = Minor)

Variable: Min Walk

Definition: Total number of minutes walked

Type: Continuous

a. Run descriptive statistics and a histogram with a normal curve for Min Walk for the whole data set.

b. Run descriptive statistics and a bar chart for MusicKey for the whole data set.

c. Run descriptive statistics and a histogram with a normal curve for Min Walk for Major only.

d. Run descriptive statistics and a histogram with a normal curve for Min Walk for Minor only.

You want to determine the optimal tutor-to-student ratio. Students seeking tutoring will be randomly assigned to one of two groups:

Group 1 will involve each tutor working with only one student, and in Group 2, each tutor will work with two students. At the end of the term, students will be asked to complete the Tutor Satisfaction Survey, which renders a score from 0 to 100.

Data set: Ch 04 – Exercise 01A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = One-to-one, 2 = Two-to-one)

Variable: TSS

Definition: Tutor Satisfaction Survey score

Type: Continuous (0 = Very unsatisfied . . . 100 = Very satisfied)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

Clinicians at a nursing home facility want to see if giving residents a plant to tend to will help lower depression. To test this idea, the residents are randomly assigned to one of two groups: Those assigned to Group 1 will serve as the control group and will not be given a plant. Members of Group 2 will be given a small bamboo plant along with a card detailing care instructions. After 90 days, all participants will complete the Acme Depression Scale, which renders a score between 1 and 100 (1 = Low depression . . . 100 = High depression).

Data set: Ch 04 – Exercise 02A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No plant, 2 = Bamboo)

Variable: Depress

Definition: Acme Depression Scale

Type: Continuous (1 = Low depression . . . 100 = High depression)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

A judge mandates that juvenile offenders who have priors be assigned to a trained delinquency prevention mentor. To assess this intervention, offenders will be randomly assigned to one of two groups: No mentor, or a peer mentor who is 3 to 5 years older than the offender. The following data will be gathered on each participant:

Probation officer’s compliance evaluation (0% . . . 100%).

Data set: Ch 04 – Exercise 03A.sav

Codebook

Variable: Group

Definition: Mentor group assignment

Type: Categorical (1 = No mentor, 2 = Peer mentor)

Variable: Probation_compliance

Definition: Probation officer’s overall assessment of the youth’s probation compliance

Type: Continuous (0 = Completely noncompliant . . . 100 = Completely compliant)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

In an effort to determine the effectiveness of light therapy to alleviate depression, you recruit a group of individuals who have been diagnosed with depression. The participants are randomly assigned to one of two groups: Group 1 will be the control group—members of this group will receive no light therapy. Members of Group 2 will get light therapy for 1 hour on even-numbered days over the course of 1 month. After 1 month, all participants will complete the Acme Mood Scale, consisting of 10 questions; this instrument renders a score between 1 and 100 (1 = Extremely bad mood . . . 100 = Extremely good mood).

Data set: Ch 04 – Exercise 04A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No light therapy, 2 = Light therapy: even days)

Variable: Mood

Definition: Acme Mood Scale

Type: Continuous (1 = Extremely bad mood . . . 100 = Extremely good mood)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

To assess the workplace benefits of providing paid time off (PTO), the Human Resources (HR) Department implements and evaluates different PTO plans at each of the company’s two sites: Site 1 will serve as the control group; employees at this site will continue to receive 2 weeks of PTO per year. Employees at Site 2 will receive 2 weeks of PTO per year plus the fourth Friday of each month off (with pay). The HR Department will use a web-based survey to gather the following data from all employees: Score on the Acme Morale Scale (1 = Extremely low morale . . . 25 = Extremely high morale).

Data set: Ch 04 – Exercise 05A.sav

Codebook

Variable: Site

Definition: Work site

Type: Categorical (1 = 2 Weeks PTO, 2 = 2 Weeks PTO + 4th Fridays off)

Variable: Morale

Definition: Score on Acme Morale Scale

Type: Continuous (1 = Extremely low morale . . . 25 = Extremely high morale)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

It is thought that exercising early in the morning will provide better energy throughout the day. To test this idea, participants are recruited and randomly assigned to one of two groups: Members of Group 1 will constitute the control group and not be assigned any walking.

Members of Group 2 will walk from 7:00 to 7:30 a.m., Monday through Friday, over the course of 30 days. At the conclusion of the study, each participant will answer the 10 questions on the Acme End-of-the-Day Energy Scale. This instrument produces a score between 1 and 100 (1 = Extremely low energy . . . 100 = Extremely high energy).

Data set: Ch 04 – Exercise 06A.sav

Codebook

Variable: Group

Definition: Walking group assignment

Type: Categorical (1 = No walking, 2 = Walking: 30 Minutes)

Variable: Energy

Definition: Acme End-of-the-Day Energy Scale

Type: Continuous (1 = Extremely low energy . . . 100 = Extremely high energy)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

A political consulting firm wants to determine the characteristics of voters when it comes to issues involving alternative energy. The researchers recruit a group of participants and randomly assign them to one of two groups: Group 1 will be the control group; they will not be exposed to any advertising materials, and Group 2 will be shown a print advertisement that will be used in a postal mailing. Finally, each participant will indicate his or her voting intentions for Proposition 86, which involves tax deductions for hybrid cars on a 1 to 7 scale (1 = Will definitely vote no . . . 7 = Will definitely vote yes).

Data set: Ch 04 – Exercise 07A.sav

Codebook

Variable: Group

Definition: Advertising media

Type: Categorical (1 = Control, 2 = Print)

Variable: Prop_86

Definition: Likely voting decision on tax deductions for hybrid cars

Type: Continuous (1 = Will definitely vote no . . . 7 = Will definitely vote yes)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

A team of educational researchers want to assess traditional classroom instruction compared to online options. Students who are enrolled in a course will be randomly assigned to one of two sections: Students in Section 1 will take the class in a traditional classroom. Students in Section 2 will take the course online with an interactive video cast of the instructor wherein students can ask the instructor questions during the session. The researchers will gather the course grade of each student (0% . . . 100%).

Data set: Ch 04 – Exercise 08A.sav

Codebook

Variable: Section

Definition: Learning modality

Type: Categorical (1 = Classroom, 2 = Online live interactive)

Variable: Grade

Definition: Final grade in course

Type: Continuous (0 . . . 100)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

The Acme Company claims that its new reading lamp increases reading speed; you want to test this. You will record how long (in seconds) it takes for participants to read a 1,000-word essay.

Participants will be randomly assigned to one of two groups: Group 1 will be the control group; they will read the essay using regular room lighting. Those in Group 2 will read the essay using the Acme lamp.

Data set: Ch 04 – Exercise 09A.sav

Codebook

Variable: Group

Definition: Lighting group assignment

Type: Categorical (1 = Room lighting, 2 = Acme lamp)

Variable: Seconds

Definition: The time it takes to read the essay

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

Due to numerous complications involving missed medication dosages, you implement a study to determine the best strategy for enhancing medication adherence. Patients who are on a daily medication regime will be recruited, will receive a complimentary 1- month dosage of their regular medication(s), and will be randomly assigned to one of two groups: Group 1 will serve as the control group (no treatment), and Group 2 will participate in a 1-hour in-person pharmacist-administered medication adherence workshop. At the end of 1 month, participants will present their prescription bottle(s); you will count the remaining pills and calculate the dosage adherence percentage (e.g., 0 pills remaining = 100% adherence).

Data set: Ch 04 – Exercise 10A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = Control, 2 = Rx workshop)

Variable: RxAdhere

Definition: Percentage of medication adherence

Type: Continuous (0 – 100)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

You want to determine the optimal tutor-to-student ratio. Students seeking tutoring will be randomly assigned to one of two groups:

Group 1 will involve each tutor working with only one student, and in Group 2, each tutor will work with two students. At the end of the term, students will be asked to complete the Tutor Satisfaction Survey, which renders a score from 0 to 100.

Data set: Ch 04 – Exercise 01B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = One-to-one, 2 = Two-to-one)

Variable: TSS

Definition: Tutor Satisfaction Survey score

Type: Continuous (0 = Very unsatisfied . . . 100 = Very satisfied)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

Clinicians at a nursing home facility want to see if giving residents a plant to tend to will help lower depression. To test this idea, the residents are randomly assigned to one of two groups: Those assigned to Group 1 will serve as the control group and will not be given a plant. Members of Group 2 will be given a small bamboo plant along with a card detailing care instructions. After 90 days, all participants will complete the Acme Depression Scale, which renders a score between 1 and 100 (1 = Low depression . . . 100 = High depression).

Data set: Ch 04 – Exercise 02B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No plant, 2 = Bamboo)

Variable: Depress

Definition: Acme Depression Scale

Type: Continuous (1 = Low depression . . . 100 = High depression)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

A judge mandates that juvenile offenders who have priors be assigned to a trained delinquency prevention mentor. To assess this intervention, offenders will be randomly assigned to one of two groups: No mentor, or a peer mentor who is 3 to 5 years older than the offender. The following data will be gathered on each participant:

Probation officer’s compliance evaluation (0% . . . 100%).

Data set: Ch 04 – Exercise 03B.sav

Codebook

Variable: Group

Definition: Mentor group assignment

Type: Categorical (1 = No mentor, 2 = Peer mentor)

Variable: Probation_compliance

Definition: Probation officer’s overall assessment of the youth’s probation compliance

Type: Continuous (0 = Completely noncompliant . . . 100 = Completely compliant)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

In an effort to determine the effectiveness of light therapy to alleviate depression, you recruit a group of individuals who have been diagnosed with depression. The participants are randomly assigned to one of two groups: Group 1 will be the control group—members of this group will receive no light therapy. Members of Group 2 will get light therapy for 1 hour on even-numbered days over the course of 1 month. After 1 month, all participants will complete the Acme Mood Scale, consisting of 10 questions; this instrument renders a score between 1 and 100 (1 = Extremely bad mood . . . 100 = Extremely good mood).

Data set: Ch 04 – Exercise 04B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No light therapy, 2 = Light therapy: even days)

Variable: Mood

Definition: Acme Mood Scale

Type: Continuous (1 = Extremely bad mood . . . 100 = Extremely good mood)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

To assess the workplace benefits of providing paid time off (PTO), the Human Resources (HR) Department implements and evaluates different PTO plans at each of the company’s two sites: Site 1 will serve as the control group; employees at this site will continue to receive 2 weeks of PTO per year. Employees at Site 2 will receive 2 weeks of PTO per year plus the fourth Friday of each month off (with pay). The HR Department will use a web-based survey to gather the following data from all employees: Score on the Acme Morale Scale (1 = Extremely low morale . . . 25 = Extremely high morale).

Data set: Ch 04 – Exercise 05B.sav

Codebook

Variable: Site

Definition: Work site

Type: Categorical (1 = 2 Weeks PTO, 2 = 2 Weeks PTO + 4th Fridays off)

Variable: Morale

Definition: Score on Acme Morale Scale

Type: Continuous (1 = Extremely low morale . . . 25 = Extremely high morale)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

It is thought that exercising early in the morning will provide better energy throughout the day. To test this idea, participants are recruited and randomly assigned to one of two groups: Members of Group 1 will constitute the control group and not be assigned any walking.

Members of Group 2 will walk from 7:00 to 7:30 a.m., Monday through Friday, over the course of 30 days. At the conclusion of the study, each participant will answer the 10 questions on the Acme End-of-the-Day Energy Scale. This instrument produces a score between 1 and 100 (1 = Extremely low energy . . . 100 = Extremely high energy).

Data set: Ch 04 – Exercise 06B.sav

Codebook

Variable: Group

Definition: Walking group assignment

Type: Categorical (1 = No walking, 2 = Walking: 30 Minutes)

Variable: Energy

Definition: Acme End-of-the-Day Energy Scale

Type: Continuous (1 = Extremely low energy . . . 100 = Extremely high energy)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

A political consulting firm wants to determine the characteristics of voters when it comes to issues involving alternative energy. The researchers recruit a group of participants and randomly assign them to one of two groups: Group 1 will be the control group; they will not be exposed to any advertising materials, and Group 2 will be shown a print advertisement that will be used in a postal mailing. Finally, each participant will indicate his or her voting intentions for Proposition 86, which involves tax deductions for hybrid cars on a 1 to 7 scale (1 = Will definitely vote no . . . 7 = Will definitely vote yes).

Data set: Ch 04 – Exercise 07B.sav

Codebook

Variable: Group

Definition: Advertising media

Type: Categorical (1 = Control, 2 = Print)

Variable: Prop_86

Definition: Likely voting decision on tax deductions for hybrid cars

Type: Continuous (1 = Will definitely vote no . . . 7 = Will definitely vote yes)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

A team of educational researchers want to assess traditional classroom instruction compared to online options. Students who are enrolled in a course will be randomly assigned to one of two sections: Students in Section 1 will take the class in a traditional classroom. Students in Section 2 will take the course online with an interactive video cast of the instructor wherein students can ask the instructor questions during the session. The researchers will gather the course grade of each student (0% . . . 100%).

Data set: Ch 04 – Exercise 08B.sav

Codebook

Variable: Section

Definition: Learning modality

Type: Categorical (1 = Classroom, 2 = Online live interactive)

Variable: Grade

Definition: Final grade in course

Type: Continuous (0 . . . 100)

a. Write the hypotheses.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

The Acme Company claims that its new reading lamp increases reading speed; you want to test this. You will record how long (in seconds) it takes for participants to read a 1,000-word essay.

Participants will be randomly assigned to one of two groups: Group 1 will be the control group; they will read the essay using regular room lighting. Those in Group 2 will read the essay using the Acme lamp.

Data set: Ch 04 – Exercise 09B.sav

Codebook

Variable: Group

Definition: Lighting group assignment

Type: Categorical (1 = Room lighting, 2 = Acme lamp)

Variable: Seconds

Definition: The time it takes to read the essay

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

Due to numerous complications involving missed medication dosages, you implement a study to determine the best strategy for enhancing medication adherence. Patients who are on a daily medication regime will be recruited, will receive a complimentary 1- month dosage of their regular medication(s), and will be randomly assigned to one of two groups: Group 1 will serve as the control group (no treatment), and Group 2 will participate in a 1-hour in-person pharmacist-administered medication adherence workshop. At the end of 1 month, participants will present their prescription bottle(s); you will count the remaining pills and calculate the dosage adherence percentage (e.g., 0 pills remaining = 100% adherence).

Data set: Ch 04 – Exercise 10B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = Control, 2 = Rx workshop)

Variable: RxAdhere

Definition: Percentage of medication adherence

Type: Continuous (0 – 100)

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the t test and document your findings (ns, means, and Sig. [p value]).

d. Write an abstract under 200 words detailing a summary of the study, the t test results, hypothesis resolution, and implications of your findings.

You want to determine the optimal tutor-to-student ratio. Students seeking tutoring will be randomly assigned to one of three groups:

Group 1 will involve each tutor working with only one student; in Group 2, each tutor will work with two students; and in Group 3, each tutor will work with five students. At the end of the term, students will be asked to complete the Tutor Satisfaction Survey, which renders a score from 0 to 100.

Data set: Ch 05 – Exercise 01A.sav

Codebook

Variable: Group

Definition: Group number (1 = One-to-one, 2 = Two-to one, 3 = Five-to-one)

Type: Categorical

Variable: TSS

Definition: Tutor Satisfaction Survey score (0 = Very unsatisfied . . . 100 = Very satisfied)

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

You want to determine the optimal tutor-to-student ratio. Students seeking tutoring will be randomly assigned to one of three groups:

Group 1 will involve each tutor working with only one student; in Group 2, each tutor will work with two students; and in Group 3, each tutor will work with five students. At the end of the term, students will be asked to complete the Tutor Satisfaction Survey, which renders a score from 0 to 100.

Data set: Ch 05 – Exercise 01B.sav

Codebook

Variable: Group

Definition: Group number (1 = One-to-one, 2 = Two-to one, 3 = Five-to-one)

Type: Categorical

Variable: TSS

Definition: Tutor Satisfaction Survey score (0 = Very unsatisfied . . . 100 = Very satisfied)

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

Clinicians at a nursing home facility want to see if giving residents a plant to tend to will help lower depression. To test this idea, the residents are randomly assigned to one of three groups: Those assigned to Group 1 will serve as the control group and will not be given a plant. Members of Group 2 will be given a small bamboo plant along with a card detailing care instructions. Members of Group 3 will be given a small cactus along with a card detailing care instructions. After 90 days, all participants will complete the Acme Depression Scale, which renders a score between 1 and 100 (1 = Low depression . . . 100 = High depression).

Data set: Ch 05 – Exercise 02A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No plant, 2 = Bamboo, 3 = Cactus)

Variable: Depress

Definition: Acme Depression Scale

Type: Continuous (1 = Low depression . . . 100 = High depression)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

Clinicians at a nursing home facility want to see if giving residents a plant to tend to will help lower depression. To test this idea, the residents are randomly assigned to one of three groups: Those assigned to Group 1 will serve as the control group and will not be given a plant. Members of Group 2 will be given a small bamboo plant along with a card detailing care instructions. Members of Group 3 will be given a small cactus along with a card detailing care instructions. After 90 days, all participants will complete the Acme Depression Scale, which renders a score between 1 and 100 (1 = Low depression . . . 100 = High depression).

Data set: Ch 05 – Exercise 02B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No plant, 2 = Bamboo, 3 = Cactus)

Variable: Depress

Definition: Acme Depression Scale

Type: Continuous (1 = Low depression . . . 100 = High depression)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

A judge mandates that juvenile offenders who have priors be assigned to a trained delinquency prevention mentor. To assess this intervention, offenders will be randomly assigned to one of three groups: No mentor, a peer mentor who is 3 to 5 years older than the offender, or an adult mentor who is 10 or more years older than the offender. The following data will be gathered on each participant:

Probation officer’s compliance evaluation (0% . . . 100%).

Data set: Ch 05 – Exercise 03A.sav

Codebook

Variable: Group

Definition: Mentor group assignment

Type: Categorical (1 = No mentor, 2 = Peer mentor, 3 = Adult mentor)

Variable: Probation_compliance

Definition: Probation officer’s overall assessment of the youth’s probation compliance

Type: Continuous (0 = Completely non-compliant . . . 100 = Completely compliant)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

A judge mandates that juvenile offenders who have priors be assigned to a trained delinquency prevention mentor. To assess this intervention, offenders will be randomly assigned to one of three groups: No mentor, a peer mentor who is 3 to 5 years older than the offender, or an adult mentor who is 10 or more years older than the offender. The following data will be gathered on each participant:

Probation officer’s compliance evaluation (0% . . . 100%).

Data set: Ch 05 – Exercise 03B.sav

Codebook

Variable: Group

Definition: Mentor group assignment

Type: Categorical (1 = No mentor, 2 = Peer mentor, 3 = Adult mentor)

Variable: Probation_compliance

Definition: Probation officer’s overall assessment of the youth’s probation compliance

Type: Continuous (0 = Completely non-compliant . . . 100 = Completely compliant)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

In an effort to determine the effectiveness of light therapy to alleviate depression, you recruit a group of individuals who have been diagnosed with depression. The participants are randomly assigned to one of three groups: Group 1 will be the control group—members of this group will receive no light therapy. Members of Group 2 will get light therapy for 1 hour on even-numbered days over the course of 1 month. Members of Group 3 will get light therapy every day for 1 hour over the course of 1 month. After 1 month, all participants will complete the Acme Mood Scale, consisting of 10 questions; this instrument renders a score between 1 and 100 (1 = Extremely bad mood . . . 100 = Extremely good mood).

Data set: Ch 05 – Exercise 04A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No light therapy, 2 = Light therapy: even days, 3 = Light therapy: every day)

Variable: Mood

Definition: Acme Mood Scale

Type: Continuous (1 = Extremely bad mood . . . 100 = Extremely good mood)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

To assess the workplace benefits of providing paid time off (PTO), the Human Resources (HR) Department implements and evaluates different PTO plans at each of the company’s three sites: Site 1 will serve as the control group; employees at this site will continue to receive 2 weeks of PTO per year. Employees at Site 2 will receive 2 weeks of PTO per year plus the fourth Friday of each month off (with pay). Employees at Site 3 will receive 3 weeks of PTO per year. The HR Department will use a web-based survey to gather the following data from all employees: score on the Acme Morale Scale (1 = extremely low morale . . . 25 = extremely high morale).

Data set: Ch 05 – Exercise 05A.sav

Codebook

Variable: Site

Definition: Work site

Type: Categorical (1 = 2 Weeks PTO, 2 = 2 Weeks PTO + fourth Fridays off, 3 Weeks PTO)

Variable: Morale

Definition: Score on Acme Morale Scale

Type: Continuous (1 = Extremely low morale . . . 25 = Extremely high morale)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

To assess the workplace benefits of providing paid time off (PTO), the Human Resources (HR) Department implements and evaluates different PTO plans at each of the company’s three sites: Site 1 will serve as the control group; employees at this site will continue to receive 2 weeks of PTO per year. Employees at Site 2 will receive 2 weeks of PTO per year plus the fourth Friday of each month off (with pay). Employees at Site 3 will receive 3 weeks of PTO per year. The HR Department will use a web-based survey to gather the following data from all employees: score on the Acme Morale Scale (1 = extremely low morale . . . 25 = extremely high morale).

Data set: Ch 05 – Exercise 05B.sav

Codebook

Variable: Site

Definition: Work site

Type: Categorical (1 = 2 Weeks PTO, 2 = 2 Weeks PTO + fourth Fridays off, 3 Weeks PTO)

Variable: Morale

Definition: Score on Acme Morale Scale

Type: Continuous (1 = Extremely low morale . . . 25 = Extremely high morale)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

It is thought that exercising early in the morning will provide better energy throughout the day. To test this idea, participants are recruited and randomly assigned to one of three groups: Members of Group 1 will constitute the control group and not be assigned any walking.

Members of Group 2 will walk from 7:00 to 7:30 a.m., Monday through Friday, over the course of 30 days. Members of Group 3 will walk from 7:00 to 8:00 a.m., Monday through Friday, over the course of 30 days. At the conclusion of the study, each participant will answer the 10 questions on the Acme End-of-the-Day Energy Scale.

This instrument produces a score between 1 and 100 (1 = Extremely low energy . . . 100 = Extremely high energy).

Data set: Ch 05 – Exercise 06A.sav

Codebook

Variable: Group

Definition: Walking group assignment

Type: Categorical (1 = No walking, 2 = Walking: 30

Minutes, 3 = Walking: 60 minutes)

Variable: Energy

Definition: Acme End-of-the-Day Energy Scale

Type: Continuous (1 = Extremely low energy . . . 100 = Extremely high energy)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

It is thought that exercising early in the morning will provide better energy throughout the day. To test this idea, participants are recruited and randomly assigned to one of three groups: Members of Group 1 will constitute the control group and not be assigned any walking.

Members of Group 2 will walk from 7:00 to 7:30 a.m., Monday through Friday, over the course of 30 days. Members of Group 3 will walk from 7:00 to 8:00 a.m., Monday through Friday, over the course of 30 days. At the conclusion of the study, each participant will answer the 10 questions on the Acme End-of-the-Day Energy Scale.

This instrument produces a score between 1 and 100 (1 = Extremely low energy . . . 100 = Extremely high energy).

Data set: Ch 05 – Exercise 06B.sav

Codebook

Variable: Group

Definition: Walking group assignment

Type: Categorical (1 = No walking, 2 = Walking: 30

Minutes, 3 = Walking: 60 minutes)

Variable: Energy

Definition: Acme End-of-the-Day Energy Scale

Type: Continuous (1 = Extremely low energy . . . 100 = Extremely high energy)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

A political consulting firm wants to determine the characteristics of voters when it comes to issues involving alternative energy. The researchers recruit a group of participants and randomly assign them to one of three groups: Group 1 will be the control group, and they will not be exposed to any advertising materials; Group 2 will be shown a print advertisement that will be used in a postal mailing; and Group 3 will be shown a video advertisement that will be aired on television. Finally, each participant will indicate his or her voting intentions for Proposition 86, which involves tax deductions for hybrid cars on a 1 to 7 scale (1 = Will definitely vote no . . . 7 = will definitely vote yes).

Data set: Ch 05 – Exercise 07A.sav

Codebook

Variable: Group

Definition: Advertising media

Type: Categorical (1 = Control, 2 = Print, 3 = Video)

Variable: Prop_86

Definition: Likely voting decision on tax deductions for hybrid cars

Type: Continuous (1 = Will definitely vote no . . . 7 = Will definitely vote yes)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

A political consulting firm wants to determine the characteristics of voters when it comes to issues involving alternative energy. The researchers recruit a group of participants and randomly assign them to one of three groups: Group 1 will be the control group, and they will not be exposed to any advertising materials; Group 2 will be shown a print advertisement that will be used in a postal mailing; and Group 3 will be shown a video advertisement that will be aired on television. Finally, each participant will indicate his or her voting intentions for Proposition 86, which involves tax deductions for hybrid cars on a 1 to 7 scale (1 = Will definitely vote no . . . 7 = will definitely vote yes).

Data set: Ch 05 – Exercise 07B.sav

Codebook

Variable: Group

Definition: Advertising media

Type: Categorical (1 = Control, 2 = Print, 3 = Video)

Variable: Prop_86

Definition: Likely voting decision on tax deductions for hybrid cars

Type: Continuous (1 = Will definitely vote no . . . 7 = Will definitely vote yes)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

A team of educational researchers wants to assess traditional classroom instruction compared to online options. Students who are enrolled in a course will be randomly assigned to one of three sections: Students in Section 1 will take the class in a traditional classroom. Students in Section 2 will take the course online with an interactive video cast of the instructor wherein students can ask the instructor questions during the session. Students in Section 3 will take the course online and view a prerecorded video of the professor delivering the lecture. The researchers will gather the course grade of each student (0% . . . 100%).

Data set: Ch 05 – Exercise 08A.sav

Codebook

Variable: Section

Definition: Learning modality

Type: Categorical (1 = Classroom, 2 = Online live interactive, 3 = Online prerecorded video)

Variable: Grade

Definition: Final grade in course

Type: Continuous (0 . . . 100)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

A team of educational researchers wants to assess traditional classroom instruction compared to online options. Students who are enrolled in a course will be randomly assigned to one of three sections: Students in Section 1 will take the class in a traditional classroom. Students in Section 2 will take the course online with an interactive video cast of the instructor wherein students can ask the instructor questions during the session. Students in Section 3 will take the course online and view a prerecorded video of the professor delivering the lecture. The researchers will gather the course grade of each student (0% . . . 100%).

Data set: Ch 05 – Exercise 08B.sav

Codebook

Variable: Section

Definition: Learning modality

Type: Categorical (1 = Classroom, 2 = Online live interactive, 3 = Online prerecorded video)

Variable: Grade

Definition: Final grade in course

Type: Continuous (0 . . . 100)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

Due to numerous complications involving missed medication dosages, you implement a study to determine the best strategy for enhancing medication adherence. Patients who are on a daily medication regime will be recruited, will receive a complimentary 1- month dosage of their regular medication(s), and will be randomly assigned to one of four groups. Group 1 will serve as the control group (no treatment); Group 2 will participate in a 1-hour in-person pharmacist-administered medication adherence workshop; Group 3 will receive a text message reminder with a picture of the drug (e.g., It’s time to take one tablet of Drug A); Group 4 will attend the medication adherence workshop and also receive text messages. At the end of 1 month, participants will present their prescription bottle(s); you will count the remaining pills and calculate the dosage adherence percentage (e.g., 0 pills remaining = 100% adherence).

Data set: Ch 05 – Exercise 10B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = Control, 2 = Rx workshop, 3 = Texts, 4 = Rx workshop and texts)

Variable: RxAdhere

Definition: Percentage of medication adherence

Type: Continuous (0 . . . 100)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

The Acme Company claims that its new reading lamp increases reading speed, and you want to test this. You will record how long (in seconds) it takes for participants to read a 1,000-word essay.

Participants will be randomly assigned to one of four groups: Group 1 will be the control group; they will read the essay using regular room lighting. Those in Group 2 will read the essay using the Acme lamp. Those in Group 3 will read the essay using a generic reading lamp. Those in Group 4 will read the essay using a flashlight.

Data set: Ch 05 – Exercise 09A.sav

Codebook

Variable: Group

Definition: Lighting group assignment

Type: Categorical (1 = Room lighting, 2 = Acme lamp, 3 = Generic lamp, 4 = Flashlight)

Variable: Seconds

Definition: The time it takes to read the essay

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

Due to numerous complications involving missed medication dosages, you implement a study to determine the best strategy for enhancing medication adherence. Patients who are on a daily medication regime will be recruited, will receive a complimentary 1- month dosage of their regular medication(s), and will be randomly assigned to one of four groups. Group 1 will serve as the control group (no treatment); Group 2 will participate in a 1-hour in-person pharmacist-administered medication adherence workshop; Group 3 will receive a text message reminder with a picture of the drug (e.g., It’s time to take one tablet of Drug A); Group 4 will attend the medication adherence workshop and also receive text messages. At the end of 1 month, participants will present their prescription bottle(s); you will count the remaining pills and calculate the dosage adherence percentage (e.g., 0 pills remaining = 100% adherence).

Data set: Ch 05 – Exercise 10A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = Control, 2 = Rx workshop, 3 = Texts, 4 = Rx workshop and texts)

Variable: RxAdhere

Definition: Percentage of medication adherence

Type: Continuous (0 . . . 100)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

The Acme Company claims that its new reading lamp increases reading speed, and you want to test this. You will record how long (in seconds) it takes for participants to read a 1,000-word essay.

Participants will be randomly assigned to one of four groups: Group 1 will be the control group; they will read the essay using regular room lighting. Those in Group 2 will read the essay using the Acme lamp. Those in Group 3 will read the essay using a generic reading lamp. Those in Group 4 will read the essay using a flashlight.

Data set: Ch 05 – Exercise 09B.sav

Codebook

Variable: Group

Definition: Lighting group assignment

Type: Categorical (1 = Room lighting, 2 = Acme lamp, 3 = Generic lamp, 4 = Flashlight)

Variable: Seconds

Definition: The time it takes to read the essay

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

In an effort to determine the effectiveness of light therapy to alleviate depression, you recruit a group of individuals who have been diagnosed with depression. The participants are randomly assigned to one of three groups: Group 1 will be the control group—members of this group will receive no light therapy. Members of Group 2 will get light therapy for 1 hour on even-numbered days over the course of 1 month. Members of Group 3 will get light therapy every day for 1 hour over the course of 1 month. After 1 month, all participants will complete the Acme Mood Scale, consisting of 10 questions; this instrument renders a score between 1 and 100 (1 = Extremely bad mood . . . 100 = Extremely good mood).

Data set: Ch 05 – Exercise 04B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No light therapy, 2 = Light therapy: even days, 3 = Light therapy: every day)

Variable: Mood

Definition: Acme Mood Scale

Type: Continuous (1 = Extremely bad mood . . . 100 = Extremely good mood)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (normality, homogeneity of variance, and n) and discuss your findings.

c. Run the ANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANOVA test results, hypothesis resolution, and implications of your findings.

You want to determine the optimal tutor-to-student ratio. Students seeking tutoring will be randomly assigned to one of three groups:

Group 1 will involve each tutor working with only one student; in Group 2, each tutor will work with two students; and in Group 3, each tutor will work with five students. At the end of the term, students will be asked to complete the Tutor Satisfaction Survey, which renders a score from 0 to 100, and the number of months that the tutor has been providing tutoring service (as the covariate).

Data set: Ch 06 – Exercise 01A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = One-to-one, 2 = Two-to-one, 3 = Five-to-one)

Variable: TSS

Definition: Tutor Satisfaction Survey score

Type: Continuous (0 = very unsatisfied . . . 100 = very satisfied)

Variable: Tutor_months

Definition: Number of months the tutor has been providing tutor service

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

You want to determine the optimal tutor-to-student ratio. Students seeking tutoring will be randomly assigned to one of three groups:

Group 1 will involve each tutor working with only one student; in Group 2, each tutor will work with two students; and in Group 3, each tutor will work with five students. At the end of the term, students will be asked to complete the Tutor Satisfaction Survey, which renders a score from 0 to 100, and the number of months that the tutor has been providing tutoring service (as the covariate).

Data set: Ch 06 – Exercise 01B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = One-to-one, 2 = Two-to-one, 3 = Five-to-one)

Variable: TSS

Definition: Tutor Satisfaction Survey score

Type: Continuous (0 = very unsatisfied . . . 100 = very satisfied)

Variable: Tutor_months

Definition: Number of months the tutor has been providing tutor service

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

Clinicians at a nursing home facility want to see if giving residents a plant to tend to will help lower depression. To test this idea, the residents are randomly assigned to one of three groups: Those assigned to Group 1 will serve as the control group and will not be given a plant. Members of Group 2 will be given a small bamboo plant along with a card detailing care instructions. Members of Group 3 will be given a small cactus along with a card detailing care instructions. After 90 days, all participants will complete the Acme Depression Scale, which renders a score between 1 and 100 (1 = Low depression . . . 100 = High depression). Daily antidepressant medication dosages will also be recorded (as the covariate).

Data set: Ch 06 – Exercise 02A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No plant, 2 = Bamboo, 3 = Cactus)

Variable: Depress

Definition: Acme Depression Scale

Type: Continuous (1 = Low depression . . . 100 = High depression)

Variable: Antidepressant_Rx

Definition: Antidepressant medication take per day (in milligrams)

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

Clinicians at a nursing home facility want to see if giving residents a plant to tend to will help lower depression. To test this idea, the residents are randomly assigned to one of three groups: Those assigned to Group 1 will serve as the control group and will not be given a plant. Members of Group 2 will be given a small bamboo plant along with a card detailing care instructions. Members of Group 3 will be given a small cactus along with a card detailing care instructions. After 90 days, all participants will complete the Acme Depression Scale, which renders a score between 1 and 100 (1 = Low depression . . . 100 = High depression). Daily antidepressant medication dosages will also be recorded (as the covariate).

Data set: Ch 06 – Exercise 02B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No plant, 2 = Bamboo, 3 = Cactus)

Variable: Depress

Definition: Acme Depression Scale

Type: Continuous (1 = Low depression . . . 100 = High depression)

Variable: Antidepressant_Rx

Definition: Antidepressant medication take per day (in milligrams)

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

A judge mandates that juvenile offenders who have priors be assigned to a trained delinquency prevention mentor. To assess this intervention, offenders will be randomly assigned to one of three groups: No mentor, a peer mentor who is 3 to 5 years older than the offender, or an adult mentor who is 10 or more years older than the offender. The following data will be gathered on each participant: Probation officer’s compliance evaluation (0% . . . 100%), and the age of the offender (as the covariate).

Data set: Ch 06 – Exercise 03A.sav

Codebook

Variable: Group

Definition: Mentor group assignment

Type: Categorical (1 = No mentor, 2 = Peer mentor, 3 = Adult mentor)

Variable: Probation_compliance

Definition: Probation officer’s overall assessment of the youth’s probation compliance (0 = Completely non-compliant . . . 100 = Completely compliant)

Type: Continuous

Variable: Age

Definition: Age of offender (e.g., 16.5 years)

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

A judge mandates that juvenile offenders who have priors be assigned to a trained delinquency prevention mentor. To assess this intervention, offenders will be randomly assigned to one of three groups: No mentor, a peer mentor who is 3 to 5 years older than the offender, or an adult mentor who is 10 or more years older than the offender. The following data will be gathered on each participant: Probation officer’s compliance evaluation (0% . . . 100%), and the age of the offender (as the covariate).

Data set: Ch 06 – Exercise 03B.sav

Codebook

Variable: Group

Definition: Mentor group assignment

Type: Categorical (1 = No mentor, 2 = Peer mentor, 3 = Adult mentor)

Variable: Probation_compliance

Definition: Probation officer’s overall assessment of the youth’s probation compliance (0 = Completely non-compliant . . . 100 = Completely compliant)

Type: Continuous

Variable: Age

Definition: Age of offender (e.g., 16.5 years)

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

In an effort to determine the effectiveness of light therapy to alleviate depression, you recruit a group of individuals who have been diagnosed with depression. The participants are randomly assigned to one of three groups: Group 1 will be the control group—members of this group will receive no light therapy. Members of Group 2 will get light therapy for 1 hour on even-numbered days over the course of 1 month. Members of Group 3 will get light therapy every day for 1 hour over the course of 1 month. After 1 month, all participants will complete the Acme Mood Scale, consisting of 10 questions; this instrument renders a score between 1 and 100 (1 = Extremely bad mood . . . 100 = Extremely good mood). Each participant’s age will also be recorded (as the covariate).

Data set: Ch 06 – Exercise 04A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No light therapy, 2 = Light therapy: even days, 3 = Light therapy: every day)

Variable: Mood

Definition: Acme Mood Scale

Type: Continuous (1 = Extremely bad mood . . . 100 = Extremely good mood)

Variable: Age

Definition: Age

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

4. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

In an effort to determine the effectiveness of light therapy to alleviate depression, you recruit a group of individuals who have been diagnosed with depression. The participants are randomly assigned to one of three groups: Group 1 will be the control group—members of this group will receive no light therapy. Members of Group 2 will get light therapy for 1 hour on even-numbered days over the course of 1 month. Members of Group 3 will get light therapy every day for 1 hour over the course of 1 month. After 1 month, all participants will complete the Acme Mood Scale, consisting of 10 questions; this instrument renders a score between 1 and 100 (1 = Extremely bad mood . . . 100 = Extremely good mood). Each participant’s age will also be recorded (as the covariate).

Data set: Ch 06 – Exercise 04B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No light therapy, 2 = Light therapy: even days, 3 = Light therapy: every day)

Variable: Mood

Definition: Acme Mood Scale

Type: Continuous (1 = Extremely bad mood . . . 100 = Extremely good mood)

Variable: Age

Definition: Age

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

To assess the workplace benefits of providing paid time off (PTO), the Human Resources (HR) Department implements and evaluates different PTO plans at each of the company’s three sites: Site 1 will serve as the control group; employees at this site will continue to receive 2 weeks of PTO per year. Employees at Site 2 will receive 2 weeks of PTO per year plus the fourth Friday of each month off (with pay). Employees at Site 3 will receive 3 weeks of PTO per year. The HR Department will use a web-based survey to gather the following data from all employees: Score on the Acme Morale Scale (1 = Extremely low morale . . . 25 = Extremely high morale). Additionally, seniority (the number of years at the company) will be recorded (as the covariate).

Data set: Ch 06 – Exercise 05A.sav

Codebook

Variable: Site

Definition: Work site

Type: Categorical (1 = 2 Weeks PTO, 2 = 2 Weeks PTO + fourth Fridays off, 3 Weeks PTO)

Variable: Morale

Definition: Score on Acme Morale Scale

Type: Continuous (1 = Extremely low morale . . . 25 = Extremely high morale)

Variable: Seniority

Definition: Number of years at the company

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

To assess the workplace benefits of providing paid time off (PTO), the Human Resources (HR) Department implements and evaluates different PTO plans at each of the company’s three sites: Site 1 will serve as the control group; employees at this site will continue to receive 2 weeks of PTO per year. Employees at Site 2 will receive 2 weeks of PTO per year plus the fourth Friday of each month off (with pay). Employees at Site 3 will receive 3 weeks of PTO per year. The HR Department will use a web-based survey to gather the following data from all employees: Score on the Acme Morale Scale (1 = Extremely low morale . . . 25 = Extremely high morale). Additionally, seniority (the number of years at the company) will be recorded (as the covariate).

Data set: Ch 06 – Exercise 05B.sav

Codebook

Variable: Site

Definition: Work site

Type: Categorical (1 = 2 Weeks PTO, 2 = 2 Weeks PTO + fourth Fridays off, 3 Weeks PTO)

Variable: Morale

Definition: Score on Acme Morale Scale

Type: Continuous (1 = Extremely low morale . . . 25 = Extremely high morale)

Variable: Seniority

Definition: Number of years at the company

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

It is thought that exercising early in the morning will provide better energy throughout the day. To test this idea, participants are recruited and randomly assigned to one of three groups: Members of Group 1 will constitute the control group and not be assigned any walking. Members of Group 2 will walk from 7:00 to 7:30 a.m., Monday through Friday, over the course of 30 days. Members of Group 3 will walk from 7:00 to 8:00 a.m., Monday through Friday, over the course of 30 days. At the conclusion of the study, each participant will answer the 10 questions on the Acme End-of-the-Day Energy Scale. This instrument produces a score between 1 and 100 (1 = Extremely low energy . . . 100 = Extremely high energy). The researcher will also record the number of hours that each participant spent sitting in a typical work day (as the covariate).

Data set: Ch 06 – Exercise 06A.sav

Codebook

Variable: Group

Definition: Walking group assignment

Type: Categorical (1 = No walking, 2 = Walking: 30 Minutes, 3 = Walking: 60 minutes)

Variable: Energy

Definition: Acme End-of-the-Day Energy Scale

Type: Continuous (1 = Extremely low energy . . . 100 = Extremely high energy)

Variable: Sitting

Definition: Mean number of hours sitting per day

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

It is thought that exercising early in the morning will provide better energy throughout the day. To test this idea, participants are recruited and randomly assigned to one of three groups: Members of Group 1 will constitute the control group and not be assigned any walking. Members of Group 2 will walk from 7:00 to 7:30 a.m., Monday through Friday, over the course of 30 days. Members of Group 3 will walk from 7:00 to 8:00 a.m., Monday through Friday, over the course of 30 days. At the conclusion of the study, each participant will answer the 10 questions on the Acme End-of-the-Day Energy Scale. This instrument produces a score between 1 and 100 (1 = Extremely low energy . . . 100 = Extremely high energy). The researcher will also record the number of hours that each participant spent sitting in a typical work day (as the covariate).

Data set: Ch 06 – Exercise 06B.sav

Codebook

Variable: Group

Definition: Walking group assignment

Type: Categorical (1 = No walking, 2 = Walking: 30 Minutes, 3 = Walking: 60 minutes)

Variable: Energy

Definition: Acme End-of-the-Day Energy Scale

Type: Continuous (1 = Extremely low energy . . . 100 = Extremely high energy)

Variable: Sitting

Definition: Mean number of hours sitting per day

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

A political consulting firm wants to determine the characteristics of voters when it comes to issues involving alternative energy. The researchers recruit a group of participants and randomly assign them to one of three groups: Group 1 will be the control group, and they will not be exposed to any advertising materials; Group 2 will be shown a print advertisement that will be used in a postal mailing; and Group 3 will be shown a video advertisement that will be aired on television. Finally, each participant will indicate his or her voting intentions for Proposition 86, which involves tax deductions for hybrid cars on a 1 to 7 scale (1 = Will definitely vote no . . . 7 = will definitely vote yes). Additionally, participants will be asked to indicate their gross annual household income (as the covariate).

Data set: Ch 06 – Exercise 07A.sav

Codebook

Variable: Group

Definition: Advertising media

Type: Categorical (1 = Control, 2 = Print, 3 = Video)

Variable: Prop_86

Definition: Likely voting decision on tax deductions for hybrid cars

Type: Continuous (1 = Will definitely vote no . . . 7 = Will definitely vote yes)

Variable: Income

Definition: Annual gross household income

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

A political consulting firm wants to determine the characteristics of voters when it comes to issues involving alternative energy. The researchers recruit a group of participants and randomly assign them to one of three groups: Group 1 will be the control group, and they will not be exposed to any advertising materials; Group 2 will be shown a print advertisement that will be used in a postal mailing; and Group 3 will be shown a video advertisement that will be aired on television. Finally, each participant will indicate his or her voting intentions for Proposition 86, which involves tax deductions for hybrid cars on a 1 to 7 scale (1 = Will definitely vote no . . . 7 = will definitely vote yes). Additionally, participants will be asked to indicate their gross annual household income (as the covariate).

Data set: Ch 06 – Exercise 07B.sav

Codebook

Variable: Group

Definition: Advertising media

Type: Categorical (1 = Control, 2 = Print, 3 = Video)

Variable: Prop_86

Definition: Likely voting decision on tax deductions for hybrid cars

Type: Continuous (1 = Will definitely vote no . . . 7 = Will definitely vote yes)

Variable: Income

Definition: Annual gross household income

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

A team of educational researchers wants to assess traditional classroom instruction compared to online options. Students who are enrolled in a course will be randomly assigned to one of three sections: Students in Section 1 will take the class in a traditional classroom. Students in Section 2 will take the course online with an interactive video cast of the instructor wherein students can ask the instructor questions during the session. Students in Section 3 will take the course online and view a prerecorded video of the professor delivering the lecture. The researchers will gather the course grade of each student (0% . . . 100%). Additionally, students will be asked to indicate their age (as the covariate).

Data set: Ch 06 – Exercise 08A.sav

Codebook

Variable: Section

Definition: Learning modality

Type: Categorical (1 = Classroom, 2 = Online live interactive, 3 = Online prerecorded video)

Variable: Grade

Definition: Final grade in course

Type: Continuous (0 . . . 100)

Variable: Age

Definition: Student’s age

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

A team of educational researchers wants to assess traditional classroom instruction compared to online options. Students who are enrolled in a course will be randomly assigned to one of three sections: Students in Section 1 will take the class in a traditional classroom. Students in Section 2 will take the course online with an interactive video cast of the instructor wherein students can ask the instructor questions during the session. Students in Section 3 will take the course online and view a prerecorded video of the professor delivering the lecture. The researchers will gather the course grade of each student (0% . . . 100%). Additionally, students will be asked to indicate their age (as the covariate).

Data set: Ch 06 – Exercise 08B.sav

Codebook

Variable: Section

Definition: Learning modality

Type: Categorical (1 = Classroom, 2 = Online live interactive, 3 = Online prerecorded video)

Variable: Grade

Definition: Final grade in course

Type: Continuous (0 . . . 100)

Variable: Age

Definition: Student’s age

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

The Acme Company claims that its new reading lamp increases reading speed, and you want to test this. You will record how long (in seconds) it takes for participants to read a 1,000-word essay. Participants will be randomly assigned to one of four groups: Group 1 will be the control group; they will read the essay using regular room lighting. Those in Group 2 will read the essay using the Acme lamp. Those in Group 3 will read the essay using a generic reading lamp. Those in Group 4 will read the essay using a flashlight. Additionally, you will record the age of each participant (as the covariate).

Data set: Ch 06 – Exercise 09A.sav

Codebook

Variable: Group

Definition: Lighting group assignment

Type: Categorical (1 = Room lighting, 2 = Acme lamp, 3 = Generic lamp, 4 = Flashlight)

Variable: Seconds

Definition: The time it takes to read the essay

Type: Continuous

Variable: Age

Definition: Age

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

The Acme Company claims that its new reading lamp increases reading speed, and you want to test this. You will record how long (in seconds) it takes for participants to read a 1,000-word essay. Participants will be randomly assigned to one of four groups: Group 1 will be the control group; they will read the essay using regular room lighting. Those in Group 2 will read the essay using the Acme lamp. Those in Group 3 will read the essay using a generic reading lamp. Those in Group 4 will read the essay using a flashlight. Additionally, you will record the age of each participant (as the covariate).

Data set: Ch 06 – Exercise 09B.sav

Codebook

Variable: Group

Definition: Lighting group assignment

Type: Categorical (1 = Room lighting, 2 = Acme lamp, 3 = Generic lamp, 4 = Flashlight)

Variable: Seconds

Definition: The time it takes to read the essay

Type: Continuous

Variable: Age

Definition: Age

Type: Continuous

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

Due to numerous complications involving missed medication dosages, you implement a study to determine the best strategy for enhancing medication adherence. Patients who are on a daily medication regime will be recruited, will receive a complimentary 1- month dosage of their regular medication(s), and will be randomly assigned to one of four groups. Group 1 will serve as the control group (no treatment); Group 2 will participate in a 1-hour in-person pharmacist-administered medication adherence workshop; Group 3 will receive a text message reminder with a picture of the drug (e.g., It’s time to take one tablet of Drug A); Group 4 will attend the medication adherence workshop and receive text messages. At the end of 1 month, participants will present their prescription bottle(s); you will count the remaining pills and calculate the dosage adherence percentage (e.g., 0 pills remaining = 100% adherence). Additionally you’ll record the total number of pills prescribed for the month (as the covariate).

Data set: Ch 06 – Exercise 10A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = Control, 2 = Rx workshop, 3 = Texts, 4 = Rx workshop and texts)

Variable: RxAdhere

Definition: Percentage of medication adherence

Type: Continuous (0 – 100)

Variable: TotalRx

Definition: Total number of pills prescribed for the month

Type: Continuous

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

Due to numerous complications involving missed medication dosages, you implement a study to determine the best strategy for enhancing medication adherence. Patients who are on a daily medication regime will be recruited, will receive a complimentary 1- month dosage of their regular medication(s), and will be randomly assigned to one of four groups. Group 1 will serve as the control group (no treatment); Group 2 will participate in a 1-hour in-person pharmacist-administered medication adherence workshop; Group 3 will receive a text message reminder with a picture of the drug (e.g., It’s time to take one tablet of Drug A); Group 4 will attend the medication adherence workshop and receive text messages. At the end of 1 month, participants will present their prescription bottle(s); you will count the remaining pills and calculate the dosage adherence percentage (e.g., 0 pills remaining = 100% adherence). Additionally you’ll record the total number of pills prescribed for the month (as the covariate).

Data set: Ch 06 – Exercise 10B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = Control, 2 = Rx workshop, 3 = Texts, 4 = Rx workshop and texts)

Variable: RxAdhere

Definition: Percentage of medication adherence

Type: Continuous (0 – 100)

Variable: TotalRx

Definition: Total number of pills prescribed for the month

Type: Continuous

b. Run each criterion of the pretest checklist (homogeneity of regression slopes, homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the ANCOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the ANCOVA test results, hypothesis resolution, and implications of your findings.

You want to determine the optimal tutor-to-student ratio. Students seeking tutoring will be randomly assigned to one of three groups: Group 1 will involve each tutor working with only one student; in Group 2, each tutor will work with two students; and in Group 3, each tutor will work with five students. At the end of the term, students will be asked to complete the Tutor Satisfaction Survey, which renders a score from 0 to 100, and the average number of homework errors or incomplete questions made over the course of the term.

Data set: Ch 07 – Exercise 01A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = One-to-one, 2 = Two-to-one, 3 = Five-to-one)

Variable: TSS

Definition: Tutor Satisfaction Survey score

Type: Continuous (0 = Very unsatisfied . . . 100 = Very satisfied)

Variable: HW_errors

Definition: Number of homework errors or incomplete questions

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

You want to determine the optimal tutor-to-student ratio. Students seeking tutoring will be randomly assigned to one of three groups: Group 1 will involve each tutor working with only one student; in Group 2, each tutor will work with two students; and in Group 3, each tutor will work with five students. At the end of the term, students will be asked to complete the Tutor Satisfaction Survey, which renders a score from 0 to 100, and the average number of homework errors or incomplete questions made over the course of the term.

Data set: Ch 07 – Exercise 01B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = One-to-one, 2 = Two-to-one, 3 = Five-to-one)

Variable: TSS

Definition: Tutor Satisfaction Survey score

Type: Continuous (0 = Very unsatisfied . . . 100 = Very satisfied)

Variable: HW_errors

Definition: Number of homework errors or incomplete questions

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

Clinicians at a nursing home facility want to see if giving residents a plant to tend to will help lower depression. To test this idea, the residents are randomly assigned to one of three groups: Those assigned to Group 1 will serve as the control group and will not be given a plant. Members of Group 2 will be given a small bamboo plant along with a card detailing care instructions. Members of Group 3 will be given a small cactus along with a card detailing care instructions. After 90 days, all participants will complete the Acme Depression Scale, which renders a score between 1 and 100 (1 = Low depression . . . 100 = High depression). The staff will also keep track of the socialization of each participant (number of hours per day each resident is outside his or her room).

Data set: Ch 07 – Exercise 02A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No plant, 2 = Bamboo, 3 = Cactus)

Variable: Depress

Definition: Acme Depression Scale

Type: Continuous (1 = Low depression . . . 100 = High depression)

Variable: Social_Hours

Definition: The mean number of hours per day the resident is out of his or her room (rounded to half-hour)

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

Clinicians at a nursing home facility want to see if giving residents a plant to tend to will help lower depression. To test this idea, the residents are randomly assigned to one of three groups: Those assigned to Group 1 will serve as the control group and will not be given a plant. Members of Group 2 will be given a small bamboo plant along with a card detailing care instructions. Members of Group 3 will be given a small cactus along with a card detailing care instructions. After 90 days, all participants will complete the Acme Depression Scale, which renders a score between 1 and 100 (1 = Low depression . . . 100 = High depression). The staff will also keep track of the socialization of each participant (number of hours per day each resident is outside his or her room).

Data set: Ch 07 – Exercise 02B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No plant, 2 = Bamboo, 3 = Cactus)

Variable: Depress

Definition: Acme Depression Scale

Type: Continuous (1 = Low depression . . . 100 = High depression)

Variable: Social_Hours

Definition: The mean number of hours per day the resident is out of his or her room (rounded to half-hour)

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

A judge mandates that juvenile offenders who have priors be assigned to a trained delinquency prevention mentor. To assess this intervention, offenders will be randomly assigned to one of three groups: No mentor, a peer mentor who is 3 to 5 years older than the offender, or an adult mentor who is 10 or more years older than the offender. The following data will be gathered on each participant: Probation officer’s compliance evaluation (0% . . . 100%), and truancy (number of unexcused missed classes for the semester: 0–6 per day).

Data set: Ch 07 – Exercise 03A.sav

Codebook

Variable: Group

Definition: Mentor group assignment

Type: Categorical (1 = No mentor, 2 = Peer mentor, 3 = Adult mentor)

Variable: Probation_compliance

Definition: Probation officer’s overall assessment of the youth’s probation compliance

Type: Continuous (0 = Completely noncompliant . . . 100 = Completely compliant)

Variable: Truancy

Definition: Total number of unexcused missed classes for the semester

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

A judge mandates that juvenile offenders who have priors be assigned to a trained delinquency prevention mentor. To assess this intervention, offenders will be randomly assigned to one of three groups: No mentor, a peer mentor who is 3 to 5 years older than the offender, or an adult mentor who is 10 or more years older than the offender. The following data will be gathered on each participant: Probation officer’s compliance evaluation (0% . . . 100%), and truancy (number of unexcused missed classes for the semester: 0–6 per day).

Data set: Ch 07 – Exercise 03B.sav

Codebook

Variable: Group

Definition: Mentor group assignment

Type: Categorical (1 = No mentor, 2 = Peer mentor, 3 = Adult mentor)

Variable: Probation_compliance

Definition: Probation officer’s overall assessment of the youth’s probation compliance

Type: Continuous (0 = Completely noncompliant . . . 100 = Completely compliant)

Variable: Truancy

Definition: Total number of unexcused missed classes for the semester

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

In an effort to determine the effectiveness of light therapy to alleviate depression, you recruit a group of individuals who have been diagnosed with depression. The participants are randomly assigned to one of three groups: Group 1 will be the control group—members of this group will receive no light therapy. Members of Group 2 will get light therapy for 1 hour on even-numbered days over the course of 1 month. Members of Group 3 will get light therapy every day for 1 hour over the course of 1 month. After 1 month, all participants will complete the Acme Mood Scale, consisting of 10 questions; this instrument renders a score between 1 and 100 (1 = Extremely bad mood . . . 100 = Extremely good mood). Additionally, each participant will respond to the Acme Self Care Survey, a selfadministered survey (5 = Strong self-neglect . . . 30 = Strong selfcare).

Data set: Ch 07 – Exercise 04A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No light therapy, 2 = Light therapy: even days, 3 = Light therapy: every day)

Variable: Mood

Definition: Acme Mood Scale

Type: Continuous (1 = Extremely bad mood . . . 100 = Extremely good mood)

Variable: Self_care

Definition: Acme Self Care Survey

Type: Continuous (5 = Strong self-neglect . . . 30 = Strong self-care)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

In an effort to determine the effectiveness of light therapy to alleviate depression, you recruit a group of individuals who have been diagnosed with depression. The participants are randomly assigned to one of three groups: Group 1 will be the control group—members of this group will receive no light therapy. Members of Group 2 will get light therapy for 1 hour on even-numbered days over the course of 1 month. Members of Group 3 will get light therapy every day for 1 hour over the course of 1 month. After 1 month, all participants will complete the Acme Mood Scale, consisting of 10 questions; this instrument renders a score between 1 and 100 (1 = Extremely bad mood . . . 100 = Extremely good mood). Additionally, each participant will respond to the Acme Self Care Survey, a selfadministered survey (5 = Strong self-neglect . . . 30 = Strong selfcare).

Data set: Ch 07 – Exercise 04B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = No light therapy, 2 = Light therapy: even days, 3 = Light therapy: every day)

Variable: Mood

Definition: Acme Mood Scale

Type: Continuous (1 = Extremely bad mood . . . 100 = Extremely good mood)

Variable: Self_care

Definition: Acme Self Care Survey

Type: Continuous (5 = Strong self-neglect . . . 30 = Strong self-care)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

To assess the workplace benefits of providing paid time off (PTO), the Human Resources (HR) Department implements and evaluates different PTO plans at each of the company’s three sites: Site 1 will serve as the control group; employees at this site will continue to receive 2 weeks of PTO per year. Employees at Site 2 will receive 2 weeks of PTO per year plus the fourth Friday of each month off (with pay). Employees at Site 3 will receive 3 weeks of PTO per year. The HR Department will use a web-based survey to gather the following data from all employees: score on the Acme Morale Scale (1 = Extremely low morale . . . 25 = Extremely high morale) and productivity rating as assigned by their supervisor (1 = Extremely poor productivity . . . 100 = Extremely strong productivity).

Data set: Ch 07 – Exercise 05A.sav

Codebook

Variable: Site

Definition: Work site

Type: Categorical (1 = 2 Weeks PTO, 2 = 2 Weeks PTO + fourth Fridays off, 3 Weeks PTO)

Variable: Morale

Definition: Score on Acme Morale Scale

Type: Continuous (1 = Extremely low morale . . . 25 = Extremely high morale)

Variable: Productivity

Definition: Productivity score per supervisor’s evaluation

Type: Continuous (1 = Extremely poor productivity . . . 100 = Extremely strong productivity)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

To assess the workplace benefits of providing paid time off (PTO), the Human Resources (HR) Department implements and evaluates different PTO plans at each of the company’s three sites: Site 1 will serve as the control group; employees at this site will continue to receive 2 weeks of PTO per year. Employees at Site 2 will receive 2 weeks of PTO per year plus the fourth Friday of each month off (with pay). Employees at Site 3 will receive 3 weeks of PTO per year. The HR Department will use a web-based survey to gather the following data from all employees: score on the Acme Morale Scale (1 = Extremely low morale . . . 25 = Extremely high morale) and productivity rating as assigned by their supervisor (1 = Extremely poor productivity . . . 100 = Extremely strong productivity).

Data set: Ch 07 – Exercise 05B.sav

Codebook

Variable: Site

Definition: Work site

Type: Categorical (1 = 2 Weeks PTO, 2 = 2 Weeks PTO + fourth Fridays off, 3 Weeks PTO)

Variable: Morale

Definition: Score on Acme Morale Scale

Type: Continuous (1 = Extremely low morale . . . 25 = Extremely high morale)

Variable: Productivity

Definition: Productivity score per supervisor’s evaluation

Type: Continuous (1 = Extremely poor productivity . . . 100 = Extremely strong productivity)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

It is thought that exercising early in the morning will provide better energy throughout the day. To test this idea, participants are recruited and randomly assigned to one of three groups: Members of Group 1 will constitute the control group and not be assigned any walking. Members of Group 2 will walk from 7:00 to 7:30 a.m., Monday through Friday, over the course of 30 days. Members of Group 3 will walk from 7:00 to 8:00 a.m., Monday through Friday, over the course of 30 days. At the conclusion of the study, each participant will answer the 10 questions on the Acme End-of-the-Day Energy Scale. This instrument produces a score between 1 and 100 (1 = Extremely low energy . . . 100 = Extremely high energy). The researcher will also record the number of sick days each participant had over the past 30 days.

Data set: Ch 07 – Exercise 06A.sav

Codebook

Variable: Group

Definition: Walking group assignment

Type: Categorical (1 = No walking, 2 = Walking: 30 Minutes, 3 = Walking: 60 minutes)

Variable: Energy

Definition: Acme End-of-the-Day Energy Scale

Type: Continuous (1 = Extremely low energy . . . 100 = Extremely high energy)

Variable: Sick_days

Definition: Number of sick days over the past 30 days

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

It is thought that exercising early in the morning will provide better energy throughout the day. To test this idea, participants are recruited and randomly assigned to one of three groups: Members of Group 1 will constitute the control group and not be assigned any walking. Members of Group 2 will walk from 7:00 to 7:30 a.m., Monday through Friday, over the course of 30 days. Members of Group 3 will walk from 7:00 to 8:00 a.m., Monday through Friday, over the course of 30 days. At the conclusion of the study, each participant will answer the 10 questions on the Acme End-of-the-Day Energy Scale. This instrument produces a score between 1 and 100 (1 = Extremely low energy . . . 100 = Extremely high energy). The researcher will also record the number of sick days each participant had over the past 30 days.

Data set: Ch 07 – Exercise 06B.sav

Codebook

Variable: Group

Definition: Walking group assignment

Type: Categorical (1 = No walking, 2 = Walking: 30 Minutes, 3 = Walking: 60 minutes)

Variable: Energy

Definition: Acme End-of-the-Day Energy Scale

Type: Continuous (1 = Extremely low energy . . . 100 = Extremely high energy)

Variable: Sick_days

Definition: Number of sick days over the past 30 days

Type: Continuous

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

A team of educational researchers want to assess traditional classroom instruction compared to online options. Students who are enrolled in a course will be randomly assigned to one of three sections: Students in Section 1 will take the class in a traditional classroom. Students in Section 2 will take the course online with an interactive video cast of the instructor wherein students can ask the instructor questions during the session. Students in Section 3 will take the course online and view a prerecorded video of the professor delivering the lecture. The researchers will gather the course grade of each student (0% . . . 100%). Additionally, students will be asked to complete a course satisfaction survey (1 = Extremely unsatisfied . . . 10 = Extremely satisfied).

Data set: Ch 07 – Exercise 08B.sav

Codebook

Variable: Section

Definition: Learning modality

Type: Categorical (1 = Classroom, 2 = Online live interactive, 3 = Online prerecorded video)

Variable: Grade

Definition: Final grade in course

Type: Continuous (0 . . . 100)

Variable: Satisfaction

Definition: Course satisfaction

Type: Continuous (1 = Extremely unsatisfied . . . 10 = Extremely satisfied)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

A team of educational researchers want to assess traditional classroom instruction compared to online options. Students who are enrolled in a course will be randomly assigned to one of three sections: Students in Section 1 will take the class in a traditional classroom. Students in Section 2 will take the course online with an interactive video cast of the instructor wherein students can ask the instructor questions during the session. Students in Section 3 will take the course online and view a prerecorded video of the professor delivering the lecture. The researchers will gather the course grade of each student (0% . . . 100%). Additionally, students will be asked to complete a course satisfaction survey (1 = Extremely unsatisfied . . . 10 = Extremely satisfied).

Data set: Ch 07 – Exercise 08A.sav

Codebook

Variable: Section

Definition: Learning modality

Type: Categorical (1 = Classroom, 2 = Online live interactive, 3 = Online prerecorded video)

Variable: Grade

Definition: Final grade in course

Type: Continuous (0 . . . 100)

Variable: Satisfaction

Definition: Course satisfaction

Type: Continuous (1 = Extremely unsatisfied . . . 10 = Extremely satisfied)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

A political consulting firm wants to determine the characteristics of voters when it comes to issues involving alternative energy. The researchers recruit a group of participants and randomly assign them to one of three groups: Group 1 will be the control group, and they will not be exposed to any advertising materials; Group 2 will be shown a print advertisement that will be used in a postal mailing; and Group 3 will be shown a video advertisement that will be aired on television. Finally, each participant will indicate his or her voting intentions for Proposition 86, which involves tax deductions for hybrid cars on a 1 to 7 scale (1 = Will definitely vote no . . . 7 = will definitely vote yes). Additionally, participants will indicate their voting intentions for Proposition 99, which involves rebates for installing home solar energy using the same type of (1 to 7) scale.

Data set: Ch 07 – Exercise 07A.sav

Codebook

Variable: Group

Definition: Advertising media

Type: Categorical (1 = Control, 2 = Print, 3 = Video)

Variable: Prop_86

Definition: Likely voting decision on tax deductions for hybrid cars

Type: Continuous (1 = Will definitely vote no . . . 7 = Will definitely vote yes)

Variable: Prop_99

Definition: Likely voting decision on rebates for installing home solar energy

Type: Continuous (1 = Will definitely vote no . . . 7 = Will definitely vote yes)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

A political consulting firm wants to determine the characteristics of voters when it comes to issues involving alternative energy. The researchers recruit a group of participants and randomly assign them to one of three groups: Group 1 will be the control group, and they will not be exposed to any advertising materials; Group 2 will be shown a print advertisement that will be used in a postal mailing; and Group 3 will be shown a video advertisement that will be aired on television. Finally, each participant will indicate his or her voting intentions for Proposition 86, which involves tax deductions for hybrid cars on a 1 to 7 scale (1 = Will definitely vote no . . . 7 = will definitely vote yes). Additionally, participants will indicate their voting intentions for Proposition 99, which involves rebates for installing home solar energy using the same type of (1 to 7) scale.

Data set: Ch 07 – Exercise 07B.sav

Codebook

Variable: Group

Definition: Advertising media

Type: Categorical (1 = Control, 2 = Print, 3 = Video)

Variable: Prop_86

Definition: Likely voting decision on tax deductions for hybrid cars

Type: Continuous (1 = Will definitely vote no . . . 7 = Will definitely vote yes)

Variable: Prop_99

Definition: Likely voting decision on rebates for installing home solar energy

Type: Continuous (1 = Will definitely vote no . . . 7 = Will definitely vote yes)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

Due to numerous complications involving missed medication dosages, you implement a study to determine the best strategy for enhancing medication adherence. Patients who are on a daily medication regime will be recruited, receive a complimentary 1- month dosage of their regular medication(s), and randomly assigned to one of four groups: Group 1 will serve as the control group (no treatment); Group 2 will participate in a 1-hour in-person pharmacist administered medication adherence workshop; Group 3 will receive a text message reminder with a picture of the drug (e.g., It’s time to take one tablet of Drug A); Group 4 will attend the medication adherence workshop and also receive text messages. At the end of 1 month, participants will present their prescription bottle(s); you will count the remaining pills and calculate the dosage adherence percentage (e.g., 0 pills remaining = 100% adherence). At the conclusion of the month, each participant will answer the Acme Health Outlook Survey, a self-administered instrument to measure how pessimistic/optimistic one feels about his or her health (1 = Strong negative outlook . . . 20 = Strong positive outlook).

Data set: Ch 07 – Exercise 10A.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = Control, 2 = Rx workshop, 3 = Texts, 4 = Rx workshop and texts)

Variable: RxAdhere

Definition: Percentage of medication adherence

Type: Continuous (0 . . . 100)

Variable: Health_outlook

Definition: Score on Acme Health Outlook Survey

Type: Continuous (1 = Strong negative outlook . . . 20 = Strong positive outlook)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

Due to numerous complications involving missed medication dosages, you implement a study to determine the best strategy for enhancing medication adherence. Patients who are on a daily medication regime will be recruited, receive a complimentary 1- month dosage of their regular medication(s), and randomly assigned to one of four groups: Group 1 will serve as the control group (no treatment); Group 2 will participate in a 1-hour in-person pharmacist administered medication adherence workshop; Group 3 will receive a text message reminder with a picture of the drug (e.g., It’s time to take one tablet of Drug A); Group 4 will attend the medication adherence workshop and also receive text messages. At the end of 1 month, participants will present their prescription bottle(s); you will count the remaining pills and calculate the dosage adherence percentage (e.g., 0 pills remaining = 100% adherence). At the conclusion of the month, each participant will answer the Acme Health Outlook Survey, a self-administered instrument to measure how pessimistic/optimistic one feels about his or her health (1 = Strong negative outlook . . . 20 = Strong positive outlook).

Data set: Ch 07 – Exercise 10B.sav

Codebook

Variable: Group

Definition: Group number

Type: Categorical (1 = Control, 2 = Rx workshop, 3 = Texts, 4 = Rx workshop and texts)

Variable: RxAdhere

Definition: Percentage of medication adherence

Type: Continuous (0 . . . 100)

Variable: Health_outlook

Definition: Score on Acme Health Outlook Survey

Type: Continuous (1 = Strong negative outlook . . . 20 = Strong positive outlook)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

The Acme Company claims that its new reading lamp increases reading speed; you want to test this. You will record how long (in seconds) it takes for participants to read a 1,000-word essay.

Participants will be randomly assigned to one of four groups: Group 1 will be the control group; they will read the essay using regular room lighting. Those in Group 2 will read the essay using the Acme lamp. Those in Group 3 will read the essay using a generic reading lamp. Those in Group 4 will read the essay using a flashlight. You will also administer a one-question survey wherein each participant indicates his or her level of satisfaction with the lighting that he or she were provided (1 = Strongly dislike . . . 10 = Strongly like).

Data set: Ch 07 – Exercise 09A.sav

Codebook

Variable: Group

Definition: Lighting group assignment

Type: Categorical (1 = Room lighting, 2 = Acme lamp, 3 = Generic lamp, 4 = Flashlight)

Variable: Seconds

Definition: The time it takes to read the essay

Type: Continuous

Variable: Lighting_satisfaction

Definition: Participant’s satisfaction with assigned lighting

Type: Continuous (1 = Strongly dislike . . . 10 = Strongly like)

a. Write the hypotheses.

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

The Acme Company claims that its new reading lamp increases reading speed; you want to test this. You will record how long (in seconds) it takes for participants to read a 1,000-word essay.

Participants will be randomly assigned to one of four groups: Group 1 will be the control group; they will read the essay using regular room lighting. Those in Group 2 will read the essay using the Acme lamp. Those in Group 3 will read the essay using a generic reading lamp. Those in Group 4 will read the essay using a flashlight. You will also administer a one-question survey wherein each participant indicates his or her level of satisfaction with the lighting that he or she were provided (1 = Strongly dislike . . . 10 = Strongly like).

Data set: Ch 07 – Exercise 09B.sav

Codebook

Variable: Group

Definition: Lighting group assignment

Type: Categorical (1 = Room lighting, 2 = Acme lamp, 3 = Generic lamp, 4 = Flashlight)

Variable: Seconds

Definition: The time it takes to read the essay

Type: Continuous

Variable: Lighting_satisfaction

Definition: Participant’s satisfaction with assigned lighting

Type: Continuous (1 = Strongly dislike . . . 10 = Strongly like)

b. Run each criterion of the pretest checklist (n quota, normality, moderate correlation, homogeneity of variance-covariance [Box’s M test], and homogeneity of variance [Levene’s test]) and discuss your findings.

c. Run the MANOVA test and document your findings (ns, means, and Sig. [p value], hypotheses resolution).

d. Write an abstract under 200 words detailing a summary of the study, the MANOVA test results, hypothesis resolution, and implications of your findings.

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