a. Calculate the correlation coefficient r for these data. b. At the 0.05 level of significance, test the claim that there is a significant linear correlation between the hours spent in studying and the exam score. Determine the coefficient of determination and interpret the result. c.

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Answered: a. Calculate the correlation…

Big Ideas Math A Bridge To Success Algebra 1: Student Edition 2015

1st Edition

ISBN: 9781680331141

Author: HOUGHTON MIFFLIN HARCOURT

Publisher: Houghton Mifflin Harcourt

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Question

1. Here are the number of hours that 10 Math 121 students spent studying for a
final exam(x), and their score on that exam(y) .
Hours
7
4
9.
13
Score
70
76
57
77
91
Hours
5
6
16
Score
66
82
64
96
50
а.
Calculate the correlation coefficient r for these data.
b. At the 0.05 level of significance, test the claim that there is a significant linear
correlation between the hours spent in studying and the exam score.
Determine the coefficient of determination and interpret the result.
с.

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