Tuesday

September 30, 2014

September 30, 2014

Posted by **Jessica** on Wednesday, June 22, 2011 at 8:11pm.

- statistics -
**PsyDAG**, Thursday, June 23, 2011 at 10:55amZ = (mean1 - mean2)/standard error (SE) of difference between means

SEdiff = √(SEmean1^2 + SEmean2^2)

SEm = SD/√(n-1)(but you can use n)

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 the Z score.

**Answer this Question**

**Related Questions**

statistics - Can you please tell me how to solve for the following? Pedro took ...

statistics - A final exam in sociology has a mean of 72 and a standard deviation...

statistics - Suppose a random sample of 25 students is selected from a community...

Statistics - 5. Scores on a recent national statistics exam were normally ...

Analytical Skills - If your score on a statistics exam was 76 and the professor ...

math - on a mathematics test in high school, scores are normally distributed ...

statistics - Suppose the amount of time it takes for statistics students to ...

statistics - Scores on a visual perception test are normally distributed with a ...

Statistics - Scores on a visual perception test are normally distributed with a ...

stats - A final exam in Math 160 has a mean of 73 with standard deviation 7.73. ...