Problem 15 31 (Algorithmic) Mid West Publishing Company publishes college textbooks The company operates an 800 telephone number whereby potential adopters can ask questions about forthcoming texts, request examination copies of texts, and place orders Currently, two extension lines are used, 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 How many extension lines should be used if the company wants to handle 90 of the calls immediately fill in the blank 1 What is the probability that a call will receive a busy signal if your recommendation in part (a) is used If required, round your answer to four decimal places fill in the blank 2 What number of calls, in decimal form, receive a busy signal for the current telephone system with two extension lines If required, round your answer to four decimal places fill in the blank 3 Mid West Publishing Company publishes college textbooks The company operates an 800 telephone number whereby potential adopters can ask questions about forthcoming texts, request examination copies of texts, and place orders Currently, two extension lines are used, 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 lines should be used if the company wants to handle 90 of the calls immediately b What is the probability that a call will receive a busy signal if your recommendation in part (a) is used If required, round your answer to four decimal places c What number of calls, in decimal form, receive a busy signal for the current telephone system with two extension lines If required, round your answer to four decimal places

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Problem 15-31 (Algorithmic) Mid-West Publishing Company publishes college textbooks. The company operates an 800 telephone number whereby potential adopters can ask questions about forthcoming texts,

Problem 15-31 (Algorithmic)

How many extension lines should be used if the company wants to handle 90% of the calls immediately? fill in the blank 1
What is the probability that a call will receive a busy signal if your recommendation in part (a) is used? If required, round your answer to four decimal places. fill in the blank 2
What number of calls, in decimal form, receive a busy signal for the current telephone system with two extension lines? If required, round your answer to four decimal places. fill in the blank 3

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Mid-West Publishing Company publishes college textbooks. The company operates an 800 telephone number whereby potential adopters can ask questions about forthcoming texts, request examination copies of texts, and place orders. Currently, two extension lines are used, 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 lines should be used if the company wants to handle 90% of the calls immediately? b. What is the probability that a call will receive a busy signal if your recommendation in part (a) is used? If required, round your answer to four decimal places. c. What number of calls, in decimal form, receive a busy signal for the current telephone system with two extension lines? If required, round your answer to four decimal places