Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321755936
ISBN 13: 978-0-32175-593-3

Chapter 9 - Inferences Based on Two Samples - Exercises 9.1 - 9.29 - Learning the Mechanics - Page 423: 9.10e

Answer

Fail to reject Null Hypothesis. Hence there is no sufficient evidence that $µ_{1} - µ_{2} \ne 5$

Work Step by Step

$z = \frac{70-50-5}{\sqrt {100/100 + 64/100}}$ $= \frac{15}{1.64} = 9.146$ Since 9.146 > 1.96, we fail to reject Null Hypothesis
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.

GradeSaver will pay $15 for your literature essays
GradeSaver will pay $25 for your college application essays
GradeSaver will pay $50 for your graduate school essays – Law, Business, or Medical
GradeSaver will pay $10 for your Community Note contributions
GradeSaver will pay $500 for your Textbook Answer contributions