SOLUTION: The scores on a test are normally distributed with a mean of 50 and a standard deviation of 30. Find the score that is 2.5 standard deviations above the mean.

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Question 443692: The scores on a test are normally distributed with a mean of 50 and a standard deviation of 30. Find the score that is 2.5 standard deviations above the mean.
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi



mean of 50 and a standard deviation of 30.

*Note: z+=+blue%28x+-+mu%29%2Fblue%28sigma%29  | z = 2.5

   2.5 = (x-50)/30 

   x = 2.5*30 + 50

   x = 125