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b. Calculate the average time between arrivals. [3 marks] Answer: c. Calculate the average time a customer spends in the system. [3 marks] Answer:Question 4 Interarriva Arrival Service Time Waiting Time Time Idle Customer I time Time Time Service time in Service Customer Time of (minutes) (minutes) begins Queue ends in system Server 4 4 4 DONDO NH. DONDONDOWNWONODAWA AM .. ANNOOWEN 416 418 Total Table 1 a. Calculate and compared the average service time with the expected service time by using the given Table 2 below. Service Time Probability Cumulative Random digit (minutes) Probability Assignment 0.10 0.10 01 - 10 0.20 0.30 11 - 30 0.30 0.60 31 - 60 JAWN 0.25 0.85 61 - 85 0.10 0.95 86 - 95