Of all people applying for a certain job, only 70% are qualified. The personnel manager claims that she approves qualified people 80% of the time; she approves an unqualified person 30% of the time. (A) What is the probability that a person, chosen at random, is approved by the personnel manager? (B) What is the probability that a person is unqualified if he or she was approved by the manager?

Of all people applying for a certain job, only 70% are qualified. The personnel manager claims that she approves qualified people 80% of the time; she approves an unqualified person 30% of the time. (A) What is the probability that a person, chosen at random, is approved by the personnel manager? (B) What is the probability that a person is unqualified if he or she was approved by the manager?

A First Course in Probability (10th Edition)

10th Edition

ISBN:9780134753119

Author:Sheldon Ross

Publisher:Sheldon Ross

Chapter1: Combinatorial Analysis

Section: Chapter Questions

Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...

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Of all people applying for a certain job, only 80% are qualified. The personnel managerclaims that she approves qualified people 90% of the time; she approves an unqualifiedperson 25% of the time.(A) What is the probability that a person, chosen at random, is approved by thepersonnel manager?
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