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 4 - Probability and Counting Rules - 4-3 The Multiplication Rules and Conditional Probability - Exercises 4-3 - Page 222: 7


a. $0.082$ b. $0.119$ c. $0.918$

Work Step by Step

a. The probability that she is a female sworn officer $p=0.696\times(1-0.882)=0.082$ b. The probability that he is a male civilian employee $p=(1-0.696)\times(1-0.608)=0.119$ c. The probability that he or she is male or a civilian employee P(male)=$0.696\times0.882+(1-0.696)\times(1-0.608)=0.733$ P(civilian)=$1-0.696=0.304$ P(male civilian)=0.119 P(male or civilian)=$0.733+0.304-0.119=0.918$
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