fernando11283 fernando11283

10-04-2017
Mathematics

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1. If scores on an exam are normally distributed with a mean of 80% and a standard deviation of 10%, what would a score of 90% be in Z-scores (e.g., how many standard deviations is this score above or below the mean)?

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ivanzud ivanzud

10-04-2017

x-u/sd. 80-90/10=z score=-1. 1 standard deviation.

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