math
posted by shirley on .
kris scored 630 points on a particular section of a CPA exam for which the score were normally distributed with a mean of 600 points and a standard deviation of 75 points. At a differenttime, kerry scored 540 points on the same section, for which scores were normally distributed with a mean of 500 points and a standard devaition of 30 points.
Calculate kris's zscore.
Calculate kerry's zscore.
Who scored higher relative to the norms?
show calculations

Z = (scoremean)/SD
Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to the Z scores.