I need help with this question: A sample of n = 16 scores is selected from a normal population with = 70 and = 20.(3 POINTS) a. What is the probability that the sample mean will be greater than 60? b. What is the probability that the sample mean will be less than 66? c. What is the probability that the sample mean will be within 5 points of the populationmean? That is, what is p(65 X 75)?