Find the indicated probabilities using the geometric distribution, the Poisson distribution, or the binomial

distribution.  Then determine if the evens are unusual.  

A newspaper finds that the mean number of typographical errors per page is nine.  Find the probability that (a) exactly 6 typographical errors are found on a page, (b) at most 6 typographical errors are found on a page, and (c) more than 6 typographical errors are found on a page.

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