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: 12

Answer

$0.27-0.087$

Work Step by Step

$\hat{p}$ is the sample average of the boundaries, hence:$\hat{p}=\frac{(0.27-0.087)+(0.27+0.087)}{2}=0.27.$ E is half of the confidence interval, hence:$E=\frac{(0.27+0.087)+(0.27-0.087)}{2}=0.087$, hence the confidence interval: $0.27-0.087

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.