SOLUTION: Bill and Gina were both taking Stats classes. On his first exam, Bill scored a 79, and his class had a mean of 82 and a standard deviation of 6. On her first exam, Gina scored a
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Question 1109688: Bill and Gina were both taking Stats classes. On his first exam, Bill scored a 79, and his class had a mean of 82 and a standard deviation of 6. On her first exam, Gina scored a 75, and her class had a mean of 85 and a standard deviation of 10.
Who scored higher, relative to their class? Answer by Boreal(15235) (Show Source):
You can put this solution on YOUR website! Bill was a half SD below the mean.
Gina scores 1 SD below the mean.
Bill was higher, relative to his class.
z=(x-mean)/sd
