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SAT, 08.03.2021 17:20 keshan3000

The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of 252.3 and a standard deviation of 67.3. ​(All units are 1000 ​cells/μ​L.) Using the empirical​ rule, find each approximate percentage below. a. What is the approximate percentage of women with platelet counts within 3 standard deviations of the​ mean, or between 50.4 and 454.2​? b. What is the approximate percentage of women with platelet counts between 117.7 and 386.9​?

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