Brittney's z-score is 0 on a test with a mean of 100 and a standard deviation of 10. Jessica's z-score is 0.33 on the same test. What is the difference between their raw scores?
A) 103.3
B) 3.3
C) 13.3
D) 0.33

Question

Quizplus · Accepted Answer

Brittney's raw score is the mean, 100, because her z-score is 0. Jessica's raw score is 0.33 standard deviations above the mean, which is 0.33 * 10 = 3.3 units above 100. Therefore, the difference between their raw scores is 3.3.

Brittney's Z-Score Is 0 on a Test with a Mean