Answer
9.333
Work Step by Step
$χ2_{o} = \frac{n-1}{σ^{2}_{o}}s^{2}$
$= \frac{22-1}{1.2^{2}}0.8^{2}$
$= \frac{21}{1.44}0.64$
= 9.333
Statistics: Informed Decisions Using Data (4th Edition)
by Sullivan III, Michael
Published by
Pearson
ISBN 10:
0321757270
ISBN 13:
978-0-32175-727-2
Chapter 10 - Section 10.4 - Assess Your Understanding - Skill Building - Page 512: 8a
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