Question: A court stenographer makes three typographical errors per hour on average. Find the probability that (a) The stenographer makes exactly five typographical errors during an

A court stenographer makes three typographical errors per hour on average. Find the probability that (a) The stenographer makes exactly five typographical errors during an hour long court case. (b) The stenographer makes no more than three typographical errors during an hour long court case. (c) The stenographer makes four or more typographical errors during an hour long court case

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