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Keenan scored 80 points on an exam that had a mean score of 77 points and a standard deviation of 4.9 points. Rachel scored 78 points on an exam that had a mean score of 75 points and a standard deviation of 3.7 points. Find Rachel's z-score, to the nearest hundredth.

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Keenan scored 80 points on an exam that had a mean score of 77 points and a standard deviation of 4....

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