Phone calls

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Phone calls arrive at the rate of 36 per hour at the

Compute the probability of receiving two calls in a 5-minute interval of time.

Compute the probability of receiving exactly 12 calls in 15 minutes.

Suppose no calls are currently on hold. If the agent takes 5 minutes to complete the current call, how many callers do you expect to be waiting by that time?

d. If no calls are currently being processed, what is the probability that the agent can take 4minutes for a personal time without being interrupted by a call?(to 4 decimals)