Question 8: A medical researcher believes the body temperature of adults is normally distributed wit

Question 8: A medical researcher believes the body temperature of adults is normally distributed with a standard deviation of 0.4oC.What sample size is required such that a 99% confidence interval of mean body tem- perature of adults has width at most 0.06oC?Based on the result in part (a), is it really necessary to assume the body temperature of adults is normally distributed? Why?