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During the Early Morning Hours, Customers Arrive at a Branch

Question 54

Multiple Choice

During the early morning hours, customers arrive at a branch post office at the average rate of 45 per hour (exponential interarrival times) , while clerks can handle transactions on an average of 4 minutes each (exponential) .
What is the average number of customers waiting for service if 6 clerks are used?


A) 0
B) 0.01
C) 0.1
D) 1
E) 10

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