In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with a mean of 69.1 inches and a standard deviation of 20 inches. A study participant is randomly selected. Complete parts (a) through (c) below. (1) Find the probability that study participant has a height that is less than 68 inches The probability that the study participant selected at random is less than 68 inches tall is (Round to four decimal places as needed)