The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 259.9 and a standard deviation of 63.4. (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 2 standard deviations of the mean, or between 133.1 and 386.7? b. What is the approximate percentage of women with platelet counts between 69.7 and 450.1? a. Approximately % of women in this group have platelet counts within 2 standard deviations of the mean, or between 133.1 and 386.7. (Type an integer or a decimal. Do not round.)