Question: A maintenance service facility has poisson arrival rates, negative exponential service time and operates on a 'first come first served' queue discipline. Break downs

A maintenance service facility has poisson arrival rates, negative exponential service time and operates on a

A maintenance service facility has poisson arrival rates, negative exponential service time and operates on a 'first come first served' queue discipline. Break downs occurs on an average of 3 per day with a range of zero to eight. The maintenance 6 per day with a range of zero to seven. The mean waiting time for an item to be served would be (A) 1/6 day (B) 1/3 day (C) 1 day (D) 3 days

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