SOLUTION: The scores on an exam are normally distributed, with a mean of 79 and a standard deviation of 10. What percent of the scores are greater than 89? * 68% * 2.5% * 1

Question 307588: The scores on an exam are normally distributed, with a mean of 79 and a standard deviation of 10. What percent of the scores are greater than 89?
* 68%
* 2.5%
* 16%
* 84%
Answer by rapaljer(4671) (Show Source): You can put this solution on YOUR website!
The score of 89 represents 1 standard deviation above the mean. According to the Empirical Rule, on a normal distribution, there will be 16% of the scores above the mean.

Dr. Robert J. Rapalje, Retired
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