The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of 255.8 and a standard deviation of 65.5. ​(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 59.3 and 452.3​? b. What is the approximate percentage of women with platelet counts between 190.3 and 321.3​?

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