Answer
P(X = 3) = 0.072
Work Step by Step
n = 15, p = 0.2, k = 3
We find:
$P(X = 3) = \frac{15!}{3! (15-3)!} \cdot 0.20^{3}\cdot (1 - 0.20)^{15-3}$
P(X = 3) = 0.072
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 333: 14.6a
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