Elementary Statistics (12th Edition)

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

Chapter 8 - Hypothesis Testing - 8-2 Basics of Hypothesis Testing - Basic Skills and Concepts - Page 397: 18


P=0.9772, z=-1.645.

Work Step by Step

The P is the probability of the z-score being less than 2, hence:P=0.0228.The critical value is the z-score belonging to 0.05 to the left, hence z=-1.645.
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.