The average for the statistics exam was 72 and the standard deviation was 4. Kelsey was told by the instructor that she scored 1.85 standard deviations below the mean.
2 answers
poor Kelsey.
What is your question?
If you want to know Kelsey's score:
Z = (score-mean)/SD
-1.85 = (score-72)/4
If you want to know Kelsey's score:
Z = (score-mean)/SD
-1.85 = (score-72)/4