(Answered) Find out the probablities a newspaper says that the mean

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Find out the probablities, a newspaper says that the mean number of typographical errors per page is seven.

A. Find the probability that exactly 6 typographical errors are found on a ?page.

B. Find the probablity that at most 6 typographical errors are found on a ?page.

C. Find the probablity that more than 6 typographical errors are found on a ?page.

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