Answer
$X^2=13.053$
Work Step by Step
$X^2=Σ\frac{(O_i-E_i)^2}{E_1}=\frac{(87-75.12)^2}{75.12}+\frac{(74-80.43)^2}{80.43}+\frac{(34-39.46)^2}{39.46}+\frac{(12-23.88)^2}{23.88}+\frac{(32-25.57)^2}{25.57}+\frac{(18-12.54)^2}{12.54}=13.053$
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 12 - Section 12.2 - Assess Your Understanding - Vocabulary and Skill Building - Page 609: 4a
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