Answer
0.22
Work Step by Step
$p=0.03, n=90, \mu=np=2.7$, use Poisson formula,
$P(X=3)=\frac{2.7^3e^{-2.7}}{3!}=0.22$
Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition
by Bluman, Allan
Published by
McGraw-Hill Education
ISBN 10:
0078136334
ISBN 13:
978-0-07813-633-7
Chapter 5 - Discrete Probability Distributions - 5-4 Other Types of Distributions - Exercises 5-4 - Page 299: 14
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