3rd Edition

ISBN: 9780135188927

Author: Gould, Robert, Ryan, Colleen N. (colleen Nooter)

Publisher: Pearson,

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Textbook Question

Chapter 1, Problem 44SE

For Exercises 1.39 through 1.44, indicate whether the study is an observational study or a controlled experiment.

A local public school encourages, but does not require, students to wear uniforms. The principal of the school compares the grade point averages (GPAs) of students at this school who wear uniforms with the GPAs of those who do not wear uniforms to determine whether those wearing uniforms tend to have higher GPAs.

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Chapter 1, Problem 43SE

Chapter 1, Problem 45SE

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Chapter 1 Solutions

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Solution Summary: The author explains that the provided case is an observational study. The principal of the school checks whether the students wearing uniform tend to have higher GPAs or not.

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