statistics

What score in a distribuiton that has a mean of 500 and a standard deviaiton of 100, would identify the top 60% of scores?

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  1. Z = (score-mean)/SD

    Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion (.60), put the corresponding Z score along with the other data in the equation above and solve for the score.

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