Bobby and Cindy are in different math classes. Bobby got a 75 on his test and Cindy got a 70 (surprisingly low for children of an architect). Bobby’s class had a mean of 80 and a standard deviation of 5. Cindy’s class had a mean of 75 and a standard deviation of 10. Who did better on their test, Bobby or Cindy?

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anonymous · Answer

For this problem, I got z score for both Bobby and Cindy and got z score of bobby higher than cindy, does it means that bobby did better than cindy