Answer
See below.
Work Step by Step
By plugging in $x=15$ into the formula: $P(15)=\frac{20^{15}e^{-20}}{15!}\approx0.0516$
By plugging in $x=20$ into the formula: $P(20)=\frac{20^{20}e^{-20}}{20!}\approx0.0888$
College Algebra (10th Edition)
by Sullivan, Michael
Published by
Pearson
ISBN 10:
0321979478
ISBN 13:
978-0-32197-947-6
Chapter 6 - Section 6.3 - Exponential Functions - 6.3 Assess Your Understanding - Page 438: 115
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