Elementary Statistics: A Step-by-Step Approach with Formula Card 9th Edition

Published by McGraw-Hill Education
ISBN 10: 0078136334
ISBN 13: 978-0-07813-633-7

Chapter 5 - Discrete Probability Distributions - Chapter Quiz - Page 307: 25

Answer

0.008

Work Step by Step

Use multinomial formula with $p0=0.5,p1=0.3,p2=0.15,p3=0.05,n=30,x0=15,x1=8,x2=5,x3=2$ $P=\frac{30!}{15!8!5!2!}0.5^{15}0.3^80.15^50.05^2=0.008$
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