Suppose your statistics professor reports test grades as z-scores, and you got a score of 2.20 on an exam. Write a sentence explaining what that means. Select the correct choice below
A. The score was 2.20 standard deviations higher than the mean score in the class.
B. The score was 2.20 points higher than the mean score in the class.
C. The score was 2.20 standard deviations lower than the mean score in the class.
D. The score was 2.20 points lower than the mean score in the class.