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: 15

Answer

$X^2=8.11$

Work Step by Step

$X^2=\frac{(n-1))^2s^2}{\sigma^2}=\frac{(40-1))^22.28^2}{5^2}=8.11$
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