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suppose that a normal model described student scores in a history class. Parker has a standardized score (z-score) of +2.5 this means that parkera) has a score that is 2.5 times the average for the classb) has a SD of 2.5c) none of thesed) is 2.5 points above average for the classe) is 2.5 SD's above average for the class
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