The blood platelet counts of a group of women have a?bell-shaped distribution with a mean of 257.4 and a standard deviation of 67.3 ?(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 3 standard deviations of the?mean, or between 55.5 and 459.?

b.What is the approximate percentage of women with platelet counts between 122.8 and 392.0?

392.0??

The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 257.4 and a standard deviation of 67.3. (All units are 1000 cells/L.) Using the empirical rule, find each approximate percentage below. a. What is the approximate percentage of women with platelet counts within 3 standard deviations of the mean, or between 55.5 and 459.3? b. What is the approximate percentage of women with platelet counts between 122.8 and 392.0? a. Approximately |% of women in this group have platelet counts within 3 standard deviations of the mean, or between 55.5 and 459.3. (Type an integer or a decimal. Do not round.)