Question: Consider the following service system. The average inter-arrival time is 12 minutes, and the standard deviation of the inter-arrival time is 12 minutes. The average

Consider the following service system. The average inter-arrival time is 12 minutes, and the standard deviation of the inter-arrival time is 12 minutes. The average processing time is 6 minutes with the standard deviation of the processing time being 6 minutes. What is the customers average waiting time of the above process?

Group of answer choices

a) 2 minutes

b) 4 minutes

c) 6 minutes

d) 8 minutes

e) 10 minutes

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