Answer
0.2
Work Step by Step
Use hypergeometric formula with $a=8, b=7, n=3, X=3$
$P(X=3)=\frac{_8C_3\cdot _7C_0+_7C_3\cdot _8C_0}{_{15}C_3}=0.2$
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: 19
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