Arrivals in a university advising office during the week of registration are known to follow a...

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Arrivals in a university advising office during the week of registration are known to follow a Poisson distribution with an average of four people arriving each hour. What is the probability that exactly five people will arrive in the next hour? 0.1688 0.1633 0.1563 0.1509 Arrivals in a university advising office during the week of registration are known to follow a Poisson distribution with an average of four people arriving each hour. What is the probability that exactly five people will arrive in the next hour? 0.1688 0.1633 0.1563 0.1509