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January 30, 2015

January 30, 2015

Posted by **Dawn** on Friday, July 15, 2011 at 9:39pm.

* Use the formula (xbar-x)/ (s/sqrtn) If the answer is larger than 2 reject HO, If the answer is smaller than 2 then do not reject HO.

- Psychology/Statistics -
**PsyDAG**, Friday, July 15, 2011 at 11:11pma. Z = (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 related to your Z score.

b. Sample of one is just like an individual score.

Z = (score-mean)/SD Use same table.

What if the answer is exactly 2?

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