Replacement Times for TV Sets Are Normally Distributed with a Mean

Short Answer

Replacement times for TV sets are normally distributed with a mean of 8.2 years and a standard deviation of 1.1 years, (based on data from "Getting Things Fixed," Consumer Reports).

-Assume that human body temperatures are normally distributed with a mean of 36.4°C and a standard deviation of 0.7°C. If we define a fever to be a body temperature above 38.0°C_____, percentage of normal and healthy persons would be considered to have a fever. This percentage suggests that a cutoff of 38.0°C is ( (appropriate/inappropriate) )?