SOLUTION: If the scores on a certain exam are normally distributed with a mean of 79 and a standard deviation of 7, then 95% of the scores will fall in which interval?
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Question 1178625: If the scores on a certain exam are normally distributed with a mean of 79 and a standard deviation of 7, then 95% of the scores will fall in which interval? Answer by amarjeeth123(569) (Show Source):
You can put this solution on YOUR website! Mean=79
Standard Deviation=7
For a normal distribution, 95% of the observations lie within 2 standard deviations from the mean.
95% of the scores will fall in the interval (79-2(7),79+2(7)) i.e.(65,93).
Answer=(65,93)
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