Elementary Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321836960
ISBN 13: 978-0-32183-696-0

Chapter 7 - Estimates and Sample Sizes - 7-2 Estimating a Population Proportion - Basic Skills and Concepts - Page 339: 21

Answer

a. 124 b. 24.7% < p <33.3% c. Yes. Because all values of the confidence interval are less than 0.5, the confidence interval shows that the percentage of women who purchase books online is very likely less than 50%. d. No. The confidence interval shows that it is possible that the percentage of women who purchase books online could be less than 25%. e. Nothing.

Work Step by Step

a. 124 b. 24.7% < p <33.3% c. Yes. Because all values of the confidence interval are less than 0.5, the confidence interval shows that the percentage of women who purchase books online is very likely less than 50%. d. No. The confidence interval shows that it is possible that the percentage of women who purchase books online could be less than 25%. e. Nothing.
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