Phone calls arrive at the rate of 48 per hour at the reservation desk for Regional Airways.

-Suppose no calls are currently on hold. If the agent takes minutes to complete the current call, how many callers do you expect to be waiting by that time?

-What is the probability that none will be waiting?

-If no calls are currently being processed, what is the probability that the agent can take 2 minutes for a personal time without being interrupted by a call?