A Teacher Records the Test Scores for the 30 Students

question 7

Multiple Choice

A teacher records the test scores for the 30 students in her class. The standard deviation of the scores was 10. Corresponding to each score, she calculates a z-score. Hugh's test score was one and A half standard deviations below the mean. What would his z-score have been?

• A)15
• B)-15
• C)1.5
• D)-1.5

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