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 15 calls per hour. The arrival rate is 30 calls per hour. How many extension lines should be used if the company wants to handle 90% of the calls immediately? 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. 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.

Sammy's Salsa, a small local company, produces 20 cases of salsa a day. Each case contains 12 jars and is imprinted with a code indicating the date and batch number. To help maintain consistency, at the end of each day, Sammy selects three bottles of salsa, weighs the contents, and tastes the product. Help Sammy select the sample jars. Today's cases are coded 07N61 through 07N80. Complete parts a) through c) below. 60min a) Carefully explain your sampling strategy. Choose the correct answer below. O A. Select one case at random. Then select three jars randomly from the case. O B. Select one jar randomly from each case. 60min O C. Select the most convenient case. Then select the first three jars from the case O D. Select three cases at random. Then select one jar randomly from each case. b) Show how to use random numbers to pick the three jars for testing. Choose the correct answer below O A. Use random numbers to choose one case from numbers 61 through 80. Then use random numbers…

Please apply table to question. Thanks!

I need help with #2, part F.