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The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 251.4 and a standard deviation of 65.3. (All
The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 251.4 and a standard deviation of 65.3. (All units are 1000 cells/pL.) Using the empirical rule, find each approximate percentage below. a. What is the approximate percentage of women with platelet counts within 2 standard deviations of the mean, or between 120.8 and 382.0? b. What is the approximate percentage of women with platelet counts between 55.5 and 447.3
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