Wednesday

August 20, 2014

August 20, 2014

Posted by **Nancy** on Tuesday, November 23, 2010 at 2:37pm.

- statistics -
**PsyDAG**, Tuesday, November 23, 2010 at 10:03pmZ = (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.

**Related Questions**

hostos - the average math sat score is 500 with a standard deviation of 100. a ...

Statistics - A researcher is interested in whether students who attend private ...

statistics - 1. A researcher is interested in whether students who attend ...

ci - A researcher is interested in whether students who attend private high ...

CRJ303-Statistics question - Re-worded from the "Study Questions" part of ...

stats - SAT math scores approx. follow a normal distribution, with mean 500 and ...

statistics - SAT scores are normally distributed. The SAT in English has a mean ...

statistics - The mean of math SAT scores is 500 and the standard deviation is ...

statistics - Assuming SAT score data are normally distributed, if only the top ...

statistics in psychology - An analysis of the combined SAT scores (Verbal + ...