The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of 261.6 and a standard deviation of 62.4. ​(All units are 1000 ​cells/mu ​L.) 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 136.8 and 386.4​? Approximatelyenter your response here ​% of women in this group have platelet counts within 2 standard deviations of the​ mean, or between 136.8 and 386.4. ​(Type an integer or a decimal. Do not​ round.)   b. What is the approximate percentage of women with platelet counts between 74.4 and 448.8​? Approximately ​% of women in this group have platelet counts between 74.4 and 448.8. ​(Type an integer or a decimal. Do not​ round.)

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