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March 30, 2015

March 30, 2015

Posted by **Angela** on Tuesday, May 17, 2011 at 9:48am.

- Sampling Distribution -
**PsyDAG**, Tuesday, May 17, 2011 at 10:34amZ = (mean1 - mean2)/standard error (SE) of difference between means

SEdiff = √(SEmean1^2 + SEmean2^2)

SEm = SD/√(n-1)

If only one SD is provided, you can use just that to determine SEdiff.

Find table in the back of your statistics text labeled something like "areas under normal distribution" to find the proportions related to your Z scores.

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