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 0.64F. Using the empirical rule, nd each approximate percentage below. a. What is the approximate percentage of healthy adults with body temperatures within 2 standard deviations of the mean, or between 96.87F and 99.43F? b. What is the approximate percentage of healthy adults with body temperatures between 97.51F and 98.79F? a. Approximately % of healthy adults in this group have body temperatures within 2 standard deviations of the mean, or between 96.87F and 99.43F. (Type an integer or a decimal. Do not round.) b. Approximately "la of healthy adults in this group have body temperatures between 97.51F and 98.79F. (Type an integer or a decimal. Do not round.)