问题描述:
Question 1.Customers arrive at a busy check-out counter of a large grocery store at an average rate of 6 per minute.It is assumed that number of customer arrivals follows Poisson distribution.
a.Find the probability that in any given minute there will be three or fewer arrivals.
b.Find the probability that there will be no less than 5 arrivals in two minute period
a.Find the probability that in any given minute there will be three or fewer arrivals.
b.Find the probability that there will be no less than 5 arrivals in two minute period
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