In a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with a mean of 69.7 inches and a standard deviation of 3.0 inches. A study participant is randomly...

In a survey of a group of​ men, the heights in the​ 20-29 age group were normally​ distributed, with a mean of 69.7 inches and a standard deviation of 3.0 inches. A study participant is randomly selected.

​(a) Find the probability that a study participant has a height that is less than 68 inches