What is sherrys z-score

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Assignment:

Eastern Company administered an interpersonal skills test to 120 customer service staff. The test had a mean of 25 and a standard deviation of 6. Suppose Sherry, one of the customer service staff, scored 30. What is Sherry's z-score? Show your work.

To calculate Sherry's z-score, we take her score of 30 and subtract the mean of 25 to get 5. We then divide this by the standard deviation of 6 to get 0.83. Finally, we multiply by 10 to get 2.5. Thus, Sherry's z-score is 2.5.

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Eastern Company administered another interpersonal skills test to the employees. Sherry scored 120, where the test had a mean of 100 and a standard deviation of 25. What is Sherry's z-score? On which interpersonal skills test (first or second) did Sherry do better? Show your work.

Reference no: EM133236387

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