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A single repairperson looks after both machines 1 and 2. Each time it is repaired, machine i stays up for an exponential time with rate λi , i = 1, 2. When machine i fails, it requires an exponentially distributed amount of work with rate μi to complete its repair. The repairperson will always service machine 1 when it is down.

For instance, if machine 1 fails while 2 is being repaired, then the repair person will immediately stop work on machine 2 and start on 1. What proportion of time is machine 2 down?

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Statistics and Probability, Statistics

Category:- Statistics and Probability
Reference No.:- M91721401

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