The heights of American men are known to be normally distributed with a mean of 68.5 inches and a standard deviation of 2.2 inches.
Pictures required for both parts (probability graph)


Part A: What is the probability that a randomly selected American man is taller than 72.5 inches?

Part B: What is the probability that the average height of 35 randomly selected American men is taller than 72.5 inches?