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A job shop consists of three machines and two repairmen. The amount of time a machine works before breaking down is exponentially distributed with mean 10. If the amount of time it takes a single repairman to fix a machine is exponentially distributed with mean 8, then

a) What is the average number of machines not in use?

b) What proportion of time are both repairmen busy?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91112480

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