Question: An agent serves a customer for 3 minutes on average, and the standard deviation of the processing time is 0.9 minutes. The demand rate is

An agent serves a customer for 3 minutes on

An agent serves a customer for 3 minutes on average, and the standard deviation of the processing time is 0.9 minutes. The demand rate is 15 customers/hour, and the coefficient of variation of the arrival process is 0.4. Assume that there is only one agent in the office. What is the average waiting time for a customer? 3.15 minutes 2.25 minutes 1.5 minutes 1.125 minutes

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