Problem-4 During the period of time that a local university takes phone in registrations, calls come in at the rate of o

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Problem 4 During The Period Of Time That A Local University Takes Phone In Registrations Calls Come In At The Rate Of O 1 (73.4 KiB) Viewed 77 times

Problem-4 During the period of time that a local university takes phone in registrations, calls come in at the rate of one every two minutes. a) What is the expected number of calls in one hour? b) What is the probability of three calls in ten minutes ? (Write Excel function) c) What is the probability of more than 3 calls in ten minutes? (Write Excel function) Problem-5 Axline Computers manufactures personal computers at two plants, one in Texas and the other in Hawaii. The Texas plant has 40 employees; the Hawaii plant has 20. A random sample of 10 employees is to be asked to fill out a benefits questionnaire. a) What is the probability that none of the employees in the sample work at the plant in Hawaii (to 4 decimals)? (Write Excel function) b) What is the probability that two or fewer of the employees in the sample works at the plant in Hawaii (to 3 decimals)? (Write Excel function) c) What is the probability that 3 or more of the employees in the sample work at the plant in Hawaii (to 3 decimals)? (Write Excel function) d) What is the probability that 9 of the employees in the sample work at the plant in Texas (to 3 decimals)? (Write Excel function)