In Mr and Mrs $\left(\mathrm{L}_{\mathrm{q}}\right)=2.25$ And Utilization Is 0

Multiple Choice

In Mr. and Mrs. Phillips' grocery store, customers join the single checkout line following Poisson distribution at a rate of 15 per hour. The checkout clerk can handle 20 customers per hour, and the service time follows exponential distribution. The average number in the queue $\left(\mathrm{L}_{\mathrm{q}}\right) =2.25$ and utilization is 0.75 . The maximum number of customers waiting in line with a probability of 0.95 will be

A) 8
B) 9
C) 18
D) 19