Wednesday

August 27, 2014

August 27, 2014

Posted by **Gift** on Thursday, March 8, 2012 at 5:46pm.

- statistics -
**PsyDAG**, Friday, March 9, 2012 at 6:39amZ = (mean1 - mean2)/standard error (SE) of difference between means

SEdiff = √(SEmean1^2 + SEmean2^2)

SEm = SD/√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.

**Related Questions**

Statistics - 18 workers at a large assembly plant were asked the time it took to...

business statistics - For one of the tasks in a manufacturing process, the mean ...

statistics - the times required to assemble a product part are normally ...

statistics - 18 workers at a large assembly plant were asked the time it took to...

statistics - According to the Census Bureau's 2002 American Community Survey, ...

statistics - According to the Census Bureau's 2002 American Community Survey, ...

statistics - An employer wants to estimate to set a time limit so that 75% of ...

Math - The mean time to complete a certain stat quiz is 25 minutes, with a ...

statistics - The times taken to complete a statistics test by all students are ...

statistics - The times taken to complete a statistics test by all students are ...