The percent of fat calories that a person in America consume…

The percent of fat calories that a person in America consumes each day is normally distributed with a mean of about 36 and a standard deviation of about 10.  a. If one person in American is randomly selected, find the probability that their percent of fat calories consumed is more than 40. b. For a group of 16 individuals, find the probability that the average percent of fat calories consumed is more than 40. c. For a group of 16 individuals, find the first quartile for the average percent of fat calories.