The body temperatures of a group of healthy adults have a bell-shaped distribution with a mean of

98.35F

and a standard deviation of

0.63F.

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 96.46F and 100.24F?
b.	What is the approximate percentage of healthy adults with body temperatures between 97.72F and 98.98F?