Answered: probability that exactly two of the…

probability that exactly two of the modified machines are among the thirteen with problems assuming that all machines are equally likely to give problems?

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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Question

A factory has 52 machines. Four of these have been given an experimental modification. In
the first week after this modification, problems are reported with thirteen of the machines.
What is the probability that exactly two of the modified machines are among the thirteen with
problems assuming that all machines are equally likely to give problems?

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