Sunday

March 29, 2015

March 29, 2015

Posted by **tom** on Wednesday, April 27, 2011 at 12:42pm.

- statistics -
**PsyDAG**, Thursday, April 28, 2011 at 12:25pmZ = (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 the Z scores.

**Answer this Question**

**Related Questions**

Statistics - he Oil Price Information Center reports the mean price per gallon ...

math statistics - The average price of a gallon of unleaded regular gasoline was...

math statistics - please help me I've waited for hours The average price of a ...

statistics - How do we compute sample size fluctuations? Suppose we have a ...

sample size/ standard deviations - How do we compute sample size fluctuations? ...

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

statistics - what are the mean and standard deviation of a sampling distribution...

Statistics/Probability - The standard deviation of the masses of articles in a ...

Math (Statistic) - Considered the sampling distribution of a sample mean ...

math - Can I gt some help on these questions! 1.Research subjects that are ...