Homework Help: statistics

Posted by Letisha on Monday, October 31, 2011 at 10:18am.

Suppose that you have just taken a test and earned a score of 90%. Your instructor informs the class that the grades were normally distributed, that the average was 75%, and the standard deviation was 12%. Calculate your z-score to the hundredths place.

statistics - PsyDAG, Monday, October 31, 2011 at 12:16pm
Z = (score-mean)/SD

Insert values and calculate.

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