posted by Stacey Moore
The distribution of heights of American women aged 18 to 24 is approximately normally distributed with mean 65.5 inches and standard deviation 2.5 inches. What is the probability that a randomly selected woman is over 70 inches tall?
Z = (score-mean)/SD
Calculate the Z score and find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to that Z score.