The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 257.1 and a standard deviation of 64.7. (All units are 1000 cellstL.) Using the empirical rule, nd each approximate percentage below. a. What is the approximate percentage of women with platelet counts within 2 standard deviations of the mean, or between 127.7 and 386.5? b. What is the approximate percentage of women with platelet counts between 192.4 and 321.8? EM a. Approximately Eye of women in this group have platelet counts within 2 standard deviations of the mean, or between 127.7 and 386.5. (Type an integer or a decimal. Do not round.)