Question: EX - 3 A T . V . Repairman finds that the time spent on his jobs have an exponential distribution with mean of 3

EX-3 A T.V. Repairman finds that the time spent on his jobs have an exponential distribution with mean of 30 minutes. If he repairs sets in the order in which they come in, and if the arrival of sets is approximately Poisson with an average rate of 10 per 8-hour day, what is repairman's expected idle time each day? How many jobs are ahead of the average set just brought in?
 EX-3 A T.V. Repairman finds that the time spent on his

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