The Basic Practice of Statistics 7th Edition

Published by W. H. Freeman
ISBN 10: 146414253X
ISBN 13: 978-1-46414-253-6

Chapter 7 - Exploring Data: Part I Review - Test Yourself - Page 192: 7.31

Answer

Dividing the sum of the row "Save Time" with the total number of students, we have: $\frac{29 + 10}{115 + 69} = \frac{39}{184}$ = 0.21 = 21% c. 21%

Work Step by Step

Dividing the sum of the row "Save Time" with the total number of students, we have: $\frac{29 + 10}{115 + 69} = \frac{39}{184}$ = 0.21 = 21% c. 21%
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