A consignment of 15 record players contains 4 defectives. The record players are selected at random, one by one, and examined. Those examined are not put back. what is the probability that the 9th one examined is the last defective?

A consignment of 15 record players contains 4 defectives. The record players are selected at random, one by one, and examined. Those examined are not put back. what is the probability that the 9th one examined is the last defective?

College Algebra

10th Edition

ISBN:9781337282291

Author:Ron Larson

Publisher:Ron Larson

Chapter8: Sequences, Series,and Probability

Section8.7: Probability

Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....

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Question

A consignment of 15 record players contains 4 defectives. The record players
are selected at random, one by one, and examined. Those examined are not
put back. what is the probability that the 9th one examined is the last
defective?
Answer.…........

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