SOLUTION: SAT scores I around the nation tend to have a mean scale score around 500, a standard deviation of about 100 points, and are approximately distributed. What SAT score I within the

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Question 610369: SAT scores I around the nation tend to have a mean scale score around 500, a standard deviation of about 100 points, and are approximately distributed. What SAT score I within the population would have a percentile rank of approximately 99?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi, 

SAT scores: mean = 500 and SD = 100

What SAT score I within the population would have a percentile rank of approximately 99

Let X represent that score

NORMSINV(0.99)= 2.326 = z = (X-500)/100

                232.6 = X - 500

                 732.6 = X  

or 733 SAT Score would have a percentile rank of approximately 99