Statistics (12th Edition)

Published by Pearson
ISBN 10: 0321755936
ISBN 13: 978-0-32175-593-3

Chapter 4 - Discrete Random Variables - Exercises 4.50 - 4.76 - Learning the Mechanics - Page 204: 4.53e

Answer

4

Work Step by Step

$\begin{pmatrix} 4 \\ 3 \end{pmatrix}=\frac{4!}{3!(4-3)!}=\frac{4\times3!}{3!\times1!}=\frac{4}{1}=4$
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