Customers arrive at a video rental desk at the rate of one per minute (exponential interarrival times). Each server can handle 0.4 customers per minute (exponential service times).
What is the minimum number of servers needed to achieve an average time in the system of less than three minutes?
A) 2
B) 3
C) 4
D) 5
E) 6

Question

Quizplus · Accepted Answer

The Answer of Customers arrive at a video rental desk at the rate of one per minute (exponential interarrival times). Each server can handle 0.4 customers per minute (exponential service times).
What is the minimum number of servers needed to achieve an average time in the system of less than three minutes?
A) 2
B) 3
C) 4
D) 5
E) 6

Customers Arrive at a Video Rental Desk at the Rate