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A First Course in Probability (10th Edition)
10th Edition
ISBN: 9780134753119
Author: Sheldon Ross
Publisher: PEARSON
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
Transcribed Image Text:Diane Bruns is the mayor of a large city. Lately, she has become concerned about the
possibility that large numbers of people who are drawing unemployment checks are
secretly employed. Her assistants estimate that 40 percent of unemployment
beneficiaries fall into this category, but Ms. Bruns is not convinced. She asks one of
her aides to conduct a quiet investigation of 10 randomly selected unemployment
beneficiaries. If the mayor's assistants are correct, what is the probability that one or
three of the investigated individuals have jobs?
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