A Multiple Channel Queuing System with a Poisson Arrival Rate

Multiple Choice

A multiple channel queuing system with a Poisson arrival rate and exponential service time has an average arrival rate of 4 customers per hour and an average service time of 18 minutes per customer.The minimum number of servers required to avoid an overloaded system is:

A) 1
B) 2
C) 3
D) 4
E) 5