Answer to Question #237058 in Operations Research for opr

Question

In a departmental store, one cashier is there to serve the customers. And the customers pick up their needs by themselves. The arrival rate is 9 customers for every 5 minutes and the cashier can serve 10 customers in 5 minutes. Assuming Poisson arrival rate and Exponential distribution for service rate, find

i.) Average number of customers in the system

ii.) Average time a customer spends in the system

iii.)Average number of customers in the queue or average queue length

iv.)Average time a customer waits before being served