Question: Need Answer for PART C only. Please answer correctly I'll Upvote. I t's urgent !! Problem 4. During the early morning hours, customers arrive at

Need Answer for PART C only. Please answer

Need Answer for PART C only. Please answer correctly I'll Upvote. It's urgent !!

Problem 4. During the early morning hours, customers arrive at a branch post office at an average of 3 minutes per customer (Poisson), while clerks can handle transactions in an average time (exponential) of 6 minutes each. Please find the following: (Please keep five decimal places). a. The average time of customers waiting for service if three clerks are used (provide your answer in minutes. b. If four clerks are used, how much will customer waiting time be reduced (in minutes)? C. If the hourly wage for a clerk is $20 and the estimated average cost of customer waiting time is $100 per hour, what is the optimal number of clerks such that the total cost is at the lowest possible

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