Thursday

November 27, 2014

November 27, 2014

Posted by **Zelinka** on Wednesday, May 4, 2011 at 12:22pm.

- statistics -
**PsyDAG**, Wednesday, May 4, 2011 at 1:18pmZ = (mean1 - mean2)/standard error (SE) of difference between means

mean1 = sample mean

SEdiff = √(SEmean1^2 + SEmean2^2)

SEm = SD/√(n-1) (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 proportions related to the Z scores you found.

**Answer this Question**

**Related Questions**

statistics - The scores of students on the ACT college entrance examination in ...

stat - the average number of pushups a United States Marine does daily is 300, ...

statistics - 1. A random sample of n = 16 scores is selected from a normal ...

statistics - random sample of n = 16 scores is selected from a normal ...

Statistics - 1. The scores of students on the ACT college entrance examination ...

Math- Statistics - A random sample of size 36 is to be selected from a ...

college - Essentials of statistics is the subject and the question is: The ...

statistics - Consider a normal distribution with mean 20 and standard deviation ...

Essentials of statistics - A populations of scores forms a normal distribution ...

probability and statistics - a population forms a normal distribution with a ...