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November 20, 2014

November 20, 2014

Posted by **Agnes** on Friday, November 11, 2011 at 7:20pm.

- statistics -
**PsyDAG**, Saturday, November 12, 2011 at 7:24pmZ = (mean1 - mean2)/standard error of the mean (SEm)

SEm = SD/√n(in each sample)

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

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