Human body temperatures for healthy individuals have approximately a normal distribution with mean 98.25°F and standard deviation .75°F. (The past accepted value of 98.6° Fahrenheit was obtained by converting the Celsius value of 37°, which is correct to the nearest integer.)
a. Find the 90th percentile of the distribution.
b. Find the 5th percentile of the distribution.
c. What temperature separates the coolest 25% from the others?