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Senna's z-score on the hearing test is -1, so in relation to the average performance on the hearing test, Senna's score is A. one standard
Senna's z-score on the hearing test is -1, so in relation to the average performance on the hearing test, Senna's score is
A. one standard deviation below the mean.
B. None of the answers are correct.
C. equal to the mean.
D. one standard deviation above the mean.
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