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December 19, 2014

December 19, 2014

Posted by **John** on Monday, June 14, 2010 at 2:32pm.

if the originalx distribution is normal can we say anything about the x distribution of random samples of size 16 find p(68<x,< 73

- Statistics -
**PsyDAG**, Wednesday, June 16, 2010 at 2:49amZ = (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 proportion between the Z scores.

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