Question: a. A sample consists of 6 scores that fall between 1 and 9 inclusive. What is the largest possible standard deviation? b. For any data

a. A sample consists of 6 scores that fall between 1 and 9 inclusive. What is the largest possible standard deviation?
b. For any data set of n scores with standard deviation s, every score must be within sV« - 1 of the mean. A statistics teacher reports that the test scores in her class of 17 students had a mean of 75.0 and a standard deviation of 5.0. Kelly, the class's self-proclaimed best student, claims that she received a grade of 97. Could Kelly be telling the truth?

Step by Step Solution

★★★★★

3.43 Rating (162 Votes )

There are 3 Steps involved in it

1 Expert Approved Answer

Step: 1 Unlock

a The largest standard deviation occurs when the data are evenly divided between the two possible ex... View full answer

Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock

Step: 3 Unlock

Document Format (1 attachment)

789-M-S-S-I (5217).docx

120 KBs Word File

Students Have Also Explored These Related Statistics Questions!

A sample consists of the following n = 7 scores: 5, 0, 4, 5, 1, 2, and 4. a. Compute the mean and standard deviation for the sample. b. Find the z-score for each score in the sample. c. Transform the...

A sample consists of the following n = 6 scores: 2, 7, 4, 6, 4, and 7. a. Compute the mean and standard deviation for the sample. b. Find the z-score for each score in the sample. c. Transform the...

A random sample is obtained from a population with a mean of = 70. A treatment is administered to the individuals in the sample and, after treatment, the sample mean is M = 78 with a standard...

Please help me to answer these questions. Thank you so much. QUESTIONS: 1. The following are descriptive statistics EXCEPT A. 25% of those who took the licensure exam for teachers failed. B. Based...

me solve this subject: stats and prob 1.) Hypothesis Testing Proportions Over the past few decades, public health officials have examined the link between weight concerns and teen girls' smoking....

Imagine that you are a psychologist who has invented a new medication ("Wildcatozine") to treat people with depression. You predict that depressed individuals who take Wildcatozine will experience...

PSYC 354 HOMEWORK 5 Z-Scores When submitting this file, be sure the filename includes your full name, course and section. Example: HW5_JohnDoe_354B01 Be sure you have reviewed this module/week's...

JUST NEED THE ANSWER! 2. Elaine gets quiz grades of 71, 75, and 64. She gets a 60 on her final exam. Find the weighted mean if the quizzes each count for 30% and the final exam counts for 50% of the...

PSYC 354 HOMEWORK 5 Z-Scores When submitting this file, be sure the filename includes your full name, course and section. Example: HW5_JohnDoe_354B01 Be sure you have reviewed this module/week's...

A builder has located a piece of property that she would like to buy and eventually build on. The land is currently zoned for four homes per acre, but she is planning to request new zoning. What she...

A certain steei al1oy rras a yielci srrength of 372 UiPa r54000 psi) anti nociulus of elasticity of 20 GFa i30 ' 106 psi) A specimen made t'rom riris steei has a recianguiar cross section of i3 l3 mm...

An unenlightened professor asks his students to memorize the first 1 0 0 0 digits of pi for the exam. To grade the exam, he uses a 1 0 0 - digit cryptographic hash function H . Instead of carefully...

The average distance between the college and homes of a group of students was 8.4 kilometers, with a standard deviation of 1.4 kilometers. Is there reason to believe that there has been a change in...

In a recent U.S. Open tennis tournament, among 20 of the calls challenged by players, 8 were overturned after a review using the Hawk-Eye electronic system. Assume that when players challenge calls,...

The probability of a randomly selected adult in the United States being infected with the human immunodeficiency virus (HIV) is 0.006 (based on data from the Kaiser Family Foundation). In tests for...

Based on data from the Centers for Disease Control, the probability of a randomly selected person having gonorrhea is 0.00114. In tests for gonorrhea, blood samples from 16 people are combined. What...

You own a portfolio that has $3,400 invested in Stock A and $4,500 invested in Stock B. Assume the expected returns on these stocks are 8 percent and 14 percent, respectively. Required: What is the...

in: 7. Which of the following best describes a firm with low operating leverage? A large change A. earnings before interest and taxes result in a small change in net income B. sales result in a small...

Find the future value of an investment of $3,400 made today for the following rates and periods: (Use 365 days for calculation. If you solve this problem with algebra round intermediate calculations...