MayneeCake2098 MayneeCake2098

16-10-2017
Mathematics

contestada

The grade point average in an econometrics examination was normally distributed with a mean of 75. in a sample of 10 percent of students it was found that the grade point average was greater than 80. can you tell what the standard deviation of the grade point average was?

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Kalahira Kalahira

25-10-2017

No. From the data provided you can not determine what the standard deviation is. In order to determine the standard deviation you need the actual grades not just a mean.

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