In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with a mean of 69.3 inches and a standard deviation of 3.0 inches. A study participant is randomly selected. Complete parts (a) through (d) below. (a) Find the probability that a 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 tail is . (Round to four decimal places as needed.) (b) Find the probability that a study participant has a height that is between 68 and 70 inches. The probability that the study participant selected at random is between 68 and 70 inches tail is . (Round to four decimal places as needed.) (c) Find the probability that a study participant has a height that is more than 70 inches. The probability that the study participant selected at random is more than 70 inches tall is . (Round to four decimal places as needed.) (d) Identify any unusual events. Explain your reasoning. Choose the correct answer below. 0 A. There are no unusual events because all the probabilities are greater than 0.05. O B. The events in parts (a). (b). and (c) are unusual because all of their probabilities are less than 0.05. O C. The events in parts (a) and (c) are unusual because its probabilities are less than 0.05. O D. The event in part (a) is unusual because its probability is less than 0.05