posted by wanda on .
minnie went to union high school while mickey went to southern high school. both schools have equally challenging classes, class size, grading policies, etc. the one difference is in their year end tests. the union high test is out of 100 points, whereas the southern high test is out of 5,000.minnie scored a 90 on her test.mickey scored a 4,900the average score on the union high test is 80 and there was a population standard deviation of 10.the average score on the southern high test was 4,950with a standard deviation of 50.
I assume that you want to know who did better.
Z = (score-mean)/SD
Compare the Z scores.