Assume that human body temperatures are normally distributed with a mean of 98 22°F and a standard deviation of 0.62°F
a. A hospital uses 100.6°F as the lowest temperature considered to be a fever. What percentage of
normal and healthy persons would be considered to have a fever? Does this percentage suggest that a
cutoff of 100.6°F is appropriate?
b. Physicians want to select a minimum temperature for requiring further medical tests. What should that
temperature be if we want only 5.0% of healthy people to exceed it? (Such a result is a false positive,
meaning that the test result is positive, but the subject is not really sick.)