Homework Help: statistics

Posted by Penny on Thursday, September 20, 2012 at 12:00am.

how do i calculate the SAT score that defines the bottom 3% of students with a mean of 500 and standard deviation of 100

statistics - PsyDAG, Saturday, September 22, 2012 at 12:44am
Z = (score-mean)/SD

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportion (.0300) related to the Z score. Insert the values into the above equation to find the score.

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