Question: a) Calculate the mean, the standard deviation and the coefficient of variation for interarrival and service times, and the utilization rate b) Determine the expected

a) Calculate the mean, the standard deviation and

a) Calculate the mean, the standard deviation and the coefficient of variation for interarrival and service times, and the utilization rate

b) Determine the expected waiting and processing time.

please with excell,thanks.

An information office opens daily from 08:00 till 12:00 and again in the afternoon. On a regular morning, customer arrivals and service times were recorded (see table below). Customer 1 Service Time (in min) 26 25 2 3 19 17 4 5 Arrival time 8:00 8:06 8:38 9:11 9:38 9:55 10:21 10:53 11:19 11:48 29 6 7 25 16 8 25 9 30 10 29

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