Essentials of Statistics (5th Edition)

Published by Pearson
ISBN 10: 0-32192-459-2
ISBN 13: 978-0-32192-459-9

Chapter 7 - Estimates and Sample Sizes - 7-2 Estimating a Population Proportion - Page 333: 23


a)236 b)0.402 < p < 0.516 c)0.431 < p < 0.487 d)99% confidence interval.

Work Step by Step

a) $x=514\cdot 0.459=235.926\approx236.$ b)0.402 < p < 0.516 c)0.431 < p < 0.487 d) The 99% confidence interval is wider because it has a bigger confidence interval and hence is less precise.
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.