Answer
a)$0.0516.$
b)$0.0888.$
Work Step by Step
a) If $P(x)=\frac{20^xe^{-20}}{x!}$, then if $x=15$, $P(15)=\frac{20^{15}e^{-20}}{15!}=0.0516.$
b) If $P(x)=\frac{20^xe^{-20}}{x!}$, then if $x=20$, $P(20)=\frac{20^{20}e^{-20}}{20!}=0.0888.$
Precalculus (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0-32197-907-9
ISBN 13:
978-0-32197-907-0
Chapter 5 - Exponential and Logarithmic Functions - 5.3 Exponential Functions - 5.3 Assess Your Understanding - Page 284: 115
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