Introductory Statistics
1st Edition
ISBN: 9781938168208
Author: Barbara Illowsky, Susan Dean
Publisher: OpenStax College
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Textbook Question
Chapter 13, Problem 54P
Use the following information to answer the next four exercises. Two students are interested in whether or not there is
variation in their test scores for math class. There are 15 total math tests they have taken so far. The first student’s grades
have a standard deviation of 38.1. The second student’s grades have a standard deviation of 22.5. The second student thinks
his scores are more consistent.
What is the p-value?
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Chapter 13 Solutions
Introductory Statistics
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