Question: A survey was conducted to measure the height of men. In the survey, respondents were grouped by age. In the 20-29 age group, the heights were normally distributed, with a mean of 68.4 inches and a standard deviation of 2.0 inches. A study participant is randomly selected. Complete parts (a) through (c).

(a) Find the probability that his height is less than 67 inches.

(b) Find the probability that his height is between 67 and 70 inches.

(c) Find the probability that his height is more than 70 inches.