Answer
df=2, critical value=5.991.
Work Step by Step
r:number of rows, c:number of columns, hence degree of freedom=$(c-1)(r-1)=(2-1)(3-1)=2.$ Using the table the critical value: $X_{0.05}^2=5.991.$
Essentials of Statistics (5th Edition)
by Triola, Mario F.
Published by
Pearson
ISBN 10:
0-32192-459-2
ISBN 13:
978-0-32192-459-9
Chapter 11 - Chi-Square and Analysis of Variance - Review - Chapter Quick Quiz - Page 576: 9
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