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Mathematics 9 Online
OpenStudy (anonymous):

Support requests arrive at a software company at the rate of 1 every 20 minutes. Assume that the requests arrive as events in a Poisson process. 1)What is the probability that the number of requests in an hour is between 3 and 5 inclusive? 2)What is the probability that the number of requests in a 10 hour work day is between 34 and 38 inclusive? 3) What is the standard deviation of the number of requests in a 10 hour work day?

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