Probability sharp discounts | Operations Management homework help

7.8 Sharp Discounts Wholesale Club is considering consolidating its two service desks (see problem 7) into one location, staffed by two clerks. The clerks will continue to work at the same individual speed of four minutes per customer.
a. What is the probability of waiting in line?
b. How many customers, on average, are waiting in line?
c. How much time does a customer spend at the service desk (waiting plus service time)?
d. Do you think the Sharp Discounts Wholesale Club should consolidate the service desks?

a. 56%
b. 1.1 customers
c. 0.12 hours or 7.2 minutes
d. Yes

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