Q. Sharp discounts wholesale club has two service desks, one at each entrance of the store. Customers arrive at each service desk at an average of one every six minutes. The service rate at each service desk is four minutes per customer.
A. Elucidate how often (illustrate what percentage of time) is each service desk idle?
B. Illustrate what is the probability that both service clerks are busy?
C. Illustrate what is the probability that both service clerks are idle?