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Please write on paper and show the steps clearly to solving this problem. Thanks! 4. (10 pts) A train arrives at at subway station in

Please write on paper and show the steps clearly to solving this problem. Thanks!

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4. (10 pts) A train arrives at at subway station in accordance with a Poisson process having rate A = 7 per an hour. (a) (5 pts) Find the probability that there 1will be 100 arrivals during a day. (b) (5 pts) Find the expected number of hours until there have been 17' arrivals

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