The blood platelet counts of a group of women have abell-shaped distribution with a mean of 250.9 and a standard deviation of 60.4

(All units are 1000 cells/ L.) Using the empiricalrule, find each approximate percentage below.

a.

What is the approximate percentage of women with platelet counts within 2 standard deviations of themean, or between 130.1 and 371.7

b.

What is the approximate percentage of women with platelet counts between 190.5 and 311.3?