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Poisson Distribution A statist

Poisson Distribution A statist.

A statistics instructor has observed that the number of typographical errors in new edition of textbooks varies considerable from the book to book. After some analysis, he concludes that the number of errors is Poisson distributed with a mean of 4 errors per 100 pages.

(1) The instructor randomly selects 100 pages of a new book. What is the probability that there are no typographical errors?

(2) If the instructor now randomly selects 300 pages of a new book. What is the probability that there are 4 or more errors?

(3) What is the standard deviation of errors per 300 pages?

Poisson Distribution A statist


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