math (statistics
posted by Joe .
John's zscore on a college entrace exam is 1.3. If the raw scores have a mean of 480 and a standard deviation of 70 points, what is his raw score?
Use a zscore formula to find John's raw score.
The formula: z = (x  mean)/sd >sd = standard deviation
Using what you know to find what you don't know:
1.3 = (x  480)/70
Solve for x.
I hope this will help.
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