Question 1045252
a. 151 and 193 are within 3 standard deviations from the mean 172, hence by the empirical rule, 99.7% of the men are between 151 cm and 193 cm.

b. 158 and 186 are within 2 standard deviations from the mean 172, hence by the empirical rule, 95% of the men are between 158 cm and 186 cm.