Answer
(a).
Work Step by Step
We can get the number of accidental injuries by summing the numbers of the first column: $295+655+239+363=1552$, thus the answer is (a).
The Basic Practice of Statistics 7th Edition
by Moore, David S.; Notz, William I.; Fligner, Michael A.
Published by
W. H. Freeman
ISBN 10:
146414253X
ISBN 13:
978-1-46414-253-6
Chapter 25 - Two Categorical Variables: The Chi-Square Test - Check Your Skills - Page 601: 25.19
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