The number of typographical errors per page in a statistics textbook has a Poisson distribution. Suppose that 90.4% of the pages have no errors. (a) What is the expected number of errors per page? (b) What is the probability that a page will have at least 2 errors?
Added by Tom-S C.
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4% of the pages have no errors, we can calculate the probability of having at least one error as follows: \[ P(X \geq 1) = 1 - P(X = 0) = 1 - 0.904 = 0.096 \] Show more…
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