Question: On a recent quiz, the class mean was 72 with a standard deviation of 3. Calculate the z-score (to 2 decima places) for a

On a recent quiz, the class mean was 72 with a standard

On a recent quiz, the class mean was 72 with a standard deviation of 3. Calculate the z-score (to 2 decima places) for a person who received score of 81. Z-score: Is this unusual? (Further than 2 standard deviations away from the mean) O Unusual

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