dult men have heights with a mean of 69.0 inches and a standard deviation of 2.8 inches. Find the z-score of a man 59.2 inches tall

In a recent study, the serum cholesterol levels in men were found to be normally distributed with a mean of 196.7 and a standard deviation of 39.1. Units are in mg/dL. Men who have a cholesterol level that is in the top 2% need regular monitoring by a physician. What is the minimum cholesterol level required to receive the regular monitoring? Round answer to the nearest whole number.

Highway driving speeds are normally distributed with a mean of 62.4 and a standard deviation of 10.6 find P81 which separates the bottom 77% from the top 23%

According to a recent survey, the salaries of assistant professors have a mean of $41,750 and a standard deviation of $7000. Assuming that the salaries of assistant professors follow a normal distribution, find the proportion of assistant professors who earn at least $45,000. Round answer to at least 4 decimal places.