The blood platelet counts of a group of women have a​bell-shaped distribution with a mean of 259.5 and a standarddeviation of 66.4. ​(All units are 1000 ​cells/mu​L.) Using theempirical​ rule, find each approximate percentage below.
a.
What is the approximate percentage of women with platelet countswithin 3 standard deviations of the​ mean, or between 60.3 and458.7​?
b.
What is the approximate percentage of women with platelet countsbetween 126.7 and 392.3​?
