A certain typing agency employs 2 typists. The average number of errors per article is 3 when
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A certain typing agency employs 2 typists. The average number of errors per article is 3 when typed by the first typist and 4.2 when typed by the second. If your article is equally likely to be typed by either typist, approximate the probability that it will have no errors.
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Given the average number of typos made by the first one 3 a 3 the a...View the full answer
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