On average, a textbook author makes 2.5 word-processing errors per page on the first draft of her textbook. (a) What is the probability that on the next page she will make 4 or more errors? (b) What is the probability that a randomly selected page is error free? Click here to view the table of Poisson probability sums. (a) The probability that a page has at least 4 errors is (Round to four decimal places as needed.)

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