Customers arrive at a video rental desk at the rate of one per minute (Poisson). Each server can handle .40 customers per minute (Poisson).
(A) If there are four servers, determine:
(1) The average time it takes to rent a video
(2) The probability of three or fewer customers in the system
(B) What is the minimum number of servers needed to achieve an average time in the system of less than three minutes?

Question

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The Answer of Customers arrive at a video rental desk at the rate of one per minute (Poisson). Each server can handle .40 customers per minute (Poisson).
(A) If there are four servers, determine:
(1) The average time it takes to rent a video
(2) The probability of three or fewer customers in the system
(B) What is the minimum number of servers needed to achieve an average time in the system of less than three minutes?

Customers Arrive at a Video Rental Desk at the Rate