The scores on a national achievement test were normally distributed, with a mean of 550 and a standard deviation of 112.
If you achieved a score of 690, how far, in standard deviations, did your score depart from the mean?
______________
What percentage of those who took the examination scored higher than you?
______________

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The Answer of The scores on a national achievement test were normally distributed, with a mean of 550 and a standard deviation of 112.
If you achieved a score of 690, how far, in standard deviations, did your score depart from the mean?
______________
What percentage of those who took the examination scored higher than you?
______________

The Scores on a National Achievement Test Were Normally Distributed