Many of a bankrsquos customers use its automatic teller


Many of a bank’s customers use its automatic teller machine to transact business after normal banking hours. During the early evening hours in the summer months, customers arrive at a certain ATM location at a rate of one every two minutes. An average of 41 customers per hour can be served by the ATM.

a. What is the utilization of this ATM?

b. What is the average wait time in minutes?

c. What is the average time in minutes spent in the system?

d. What is the average number of customers waiting for service?

e. What is the average number of customers in the system?

ANSWERS TO 4 DECIMAL PLACES

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Operation Management: Many of a bankrsquos customers use its automatic teller
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