The blood platelet counts of a group of women have a​ bell-shaped distribution with a mean of 246.7 and a standard deviation of 62.3. ​(all units are 1000 ​cells/muμ​l.) using the empirical​ rule, find each approximate percentage below.
a. what is the approximate percentage of women with platelet counts within 22 standard deviationsdeviations of the​ mean, or between 122.1 and 371.3