The heights of Canadian men are normally distributed with a mean of 71.4 inches and a standard deviation of 3.1 inches. According to the Expanded Empirical Rule, what percentage of Canadian men are:...

The heights of Canadian men are normally distributed with a mean of 71.4 inches and a standard deviation of 3.1 inches. According to the Expanded Empirical Rule, what percentage of Canadian men are:
(a) Between 62.1 and 80.7 inches tall?

(b) Over 74.5 inches tall?

(c) Under 73.477 inches tall?