STATISTICS F/BUSINESS+ECONOMICS-TEXT
13th Edition
ISBN: 9781305881884
Author: Anderson
Publisher: CENGAGE L
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Chapter 5, Problem 74SE
U.S. News & World Report’s ranking of America’s best graduate schools of business showed Harvard University and Stanford University in a tie for first place. In addition, 7 of the top 10 graduate schools of business showed students with an average undergraduate grade point average (GPA) of 3.50 or higher (America’s Best Graduate Schools, 2009 edition, U.S. News & World Report). Suppose that we randomly select 2 of the top 10 graduate schools of business.
- a. What is the
probability that exactly one school has students with an average undergraduate GPA of 3.50 or higher? - b. What is the probability that both schools have students with an average undergraduate GPA of 3.50 or higher?
- c. What is the probability that neither school has students with an average undergraduate GPA of 3.50 or higher?
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9.2 Testing the Mean mu:
Problem 3
(1 point)
Test the claim that the population of sophomore college
students has a mean grade point average greater than 2.2.
Sample statistics include n = 71, x = 2.44, and s = 0.9.
Use a significance level of a = 0.01.
The test statistic is
The P-Value is between :
The final conclusion is
< P-value <
A. There is sufficient evidence to support the claim that
the mean grade point average is greater than 2.2.
○ B. There is not sufficient evidence to support the claim
that the mean grade point average is greater than 2.2.
Note: You can earn partial credit on this problem.
Note: You are in the Reduced Scoring Period. All work counts for
50% of the original.
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Chapter 5 Solutions
STATISTICS F/BUSINESS+ECONOMICS-TEXT
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