Mathematics, 30.07.2021 02:40 fy1lqjh

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

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In a survey of a group of men, the heights in the 20-29 age group were normally distributed, with...