The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 257.7 and a standard deviation of 63.2. (All units are 1000 cells/jL) 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 194.5 and 320.9? b. What is the approximate percentage of women with platelet counts between 131.3 and 384.1? a. Approximately % of women in this group have platelet counts within 1 standard deviation of the mean, or between 194.5 and 320.9 (Type an integer or a decimal. Do not round.) b. Approximately % of women in this group have platelet counts between 131.3 and 384.1 (Type an integer or a decimal. Do not round.)