Customers arrive, on average, at the rate of two per minute at a bank in downtown Portland.
Question:
Customers arrive, on average, at the rate of two per minute at a bank in downtown Portland.
(a) Define an appropriate probability model for the experiment of observing the number of customers entering the bank in a 5-minute period.
(b) What is the probability that there will be more than 20 customers entering the bank in a 5 -minute period?
(c) What is the expected number of customers that will enter the bank during a 5 -minute period?
(d) If the bank staff can service a maximum of 20 customers in a 5-minute interval, what is the probability that the customer load will exceed capacity in a 5 -minute interval, so that some customers will experience delays in obtaining service?
Step by Step Answer:
Mathematical Statistics For Economics And Business
ISBN: 9781461450221
2nd Edition
Authors: Ron C.Mittelhammer