In: Statistics and Probability
The blood platelet counts of a group of women have a bell-shaped distribution with a mean of 259.5 and a standard deviation of 66.4. (All units are 1000 cells/muL.) 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 60.3 and 458.7?
b.
What is the approximate percentage of women with platelet counts between 126.7 and 392.3?