Answer
13.707
Work Step by Step
$χ2_{o} = \frac{n-1}{σ^{2}_{o}}s^{2}$
$= \frac{12-1}{4.3^{2}}4.8^{2}$
$= \frac{11}{18.49}23.04$
= 13.707
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: 7a
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