Question: Please solve. On a recent quiz, the class mean was 78 with a standard deviation of 3.8. Calculate the z-score (to 4 decimal places) for

Please solve. On a recent quiz, the class mean was 78

Please solve.

On a recent quiz, the class mean was 78 with a standard deviation of 3.8. Calculate the z-score (to 4 decimal places) for a person who received score of 84. z-score: Is this unusual? Unusual Not Unusual

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