A departmental store has only one cashier. During the rush hours, customers arrive at a rate of 12 customers per hour. The average number of customers that can be handled by cashier is 16 per hour. Assume the conditions for use of the single channel queuing model .Answer the following.

Answer Section

Q.No 1: Probability that cashier is idle

Q.No 2: Average number of customers waiting in the queue

Q.No 3: Average time a customer spends in the queue