The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 247.3 and a standard deviation of 65.1. (All units are 1000 cells/uL.) Using the empirical rule, find each approximate percentage below. a. What is the approximate percentage of women with platelet counts within 1 standard deviation of the mean, or between 182.2 and 312.4? b. What is the approximate percentage of women with platelet counts between 52.0 and 442.6?

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