Answer
.9762
Work Step by Step
P(210 <= X <= 270) = P(209.5 < x < 270.5) = P(-2.26 < Z < 2.26) = 1 - 2P(Z < -2.26) = 1 - 2(.0119) = .9762
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 14 - Binomial Distributions - Apply Your Knowledge - Page 338: 14.12b
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