Heights for group of people are normally distributed with mean = 66 inches and standard deviation = 4.0 inches. Find the proportion, P , of people in the group whose heights fall into the following...

Heights for group of people are normally distributed with mean = 66 inches and standard deviation = 4.0 inches. Find the proportion,
P, of people in the group whose heights fall into the following ranges. (Round your answers to four decimal places.)

(a) Greater than 60 inches.


(b) Either less than 60 inches or greater than 72 inches.