Healthy people have body temperatures that are normally distributed with a mean of 98.20∘F and a standard deviation of 0.62∘F .
(a) If a healthy person is randomly selected, what is the probability that he or she has a temperature above 99.6∘F?
b).A hospital wants to select a minimum temperature for requiring further medical tests. What should that temperature be, if we want only 2.5 % of healthy people to exceed it?

Question

Healthy people have body temperatures that are normally distributed with a mean of 98.20∘F and a standard deviation of 0.62∘F .
(a) If a healthy person is randomly selected, what is the probability that he or she has a temperature above 99.6∘F? 
b).A hospital wants to select a minimum temperature for requiring further medical tests. What should that temperature be, if we want only 2.5 % of healthy people to exceed it?

anonymous · Answer

I got part a right which is0.01197.Don't really know how the 2.5% work in part b.