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f U I Chapter introduction I Mid -West Publishing Compan',I publishes college tactboolcsn The company operates an BOO telephone number whereby potential ad oobers can
f" U I Chapter introduction I Mid -West Publishing Compan',I publishes college tactboolcsn The company operates an BOO telephone number whereby potential ad oobers can ask. questions about forthcoming texts, request examination copies oi texts, and place orders. Currently, two extension lines are usedr with two representatives handling the telephone inquiries. Calls occurring when both extension lines are being used receive a busy signal; no waiting is allowed. Each representative can accommodate an average of 11 calls per hour. The arrival rate is 22 calls per hour. a. How many extension ling should be used iF the company wants to handle 90% of the calls immediately? Ev\" b. 1.'n'hat is the probability that a call will receive a busy signal iF your recommendation in part {a} is used? If requiredr round your answer to four decimal plaoes. c. What number of calls, in decimal Forrn, receive a busy signal For the current telephone system with two extension lines?I It required, round your answer to four decimal places
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