posted by charmaine .
a bank's loan officer rates applicants for credit. the ratings are normally distributed with a mean of 175 and a standard deviation of 15. if an applicant is randomly selected, find the probability of a rating that is between 150 and 200
Z = (score-mean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion related to the Z scores.