Questions and Answers of Intermediate Statistics

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
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
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:
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
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
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
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
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:
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
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
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
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
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
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,
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
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
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
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,
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
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
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
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
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
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
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
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,
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.
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
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
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

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