Step 1 :In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with a mean of 68.9 inches and a standard deviation of 4.0 inches. A study participant is randomly selected.
Step 2 :The probability that the study participant selected at random is between 65 and 72 inches tall is 0.6160 .
Step 3 :Find the probability that a study participant has a height that is more than 72 inches. The probability that the study participant selected at random is more than 72 inches tall is 0.2192 .
Step 4 :Identify any unusual events. The correct answer is \(\boxed{\text{C. There are no unusual events because all the probabilities are greater than 0.05}}\).