The Basic Practice of Statistics 7th Edition

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

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
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