The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of 98.15F and a standard deviation of 0.53F.

Using the empirical rule, find each approximate percentage below.

a.	What is the approximate percentage of healthy adults with body temperatures within 3 standard deviations of the mean, or between 96.56F and 99.74F?
b.	What is the approximate percentage of healthy adults with body temperatures between 97.09F and 99.21F?