Question: The average job completion time for a machine in a system is 2 sec. During several 1 minute observation intervals, the average idle time is

The average job completion time for a machine in

The average job completion time for a machine in a system is 2 sec. During several 1 minute observation intervals, the average idle time is measured as 15 sec. Assuming an M/M/1 model, find the: a) System utilization and average job arrival rate b) Average service time per customer c) Number of queries completed during the 1 minute observation interval of 60 seconds d) Average number of jobs in the system e) Probability that there are 9 or fewer jobs in the system

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