Monday

July 28, 2014

July 28, 2014

Posted by **Michael** on Friday, April 22, 2011 at 10:27pm.

- statistics -
**PsyDAG**, Sunday, April 24, 2011 at 12:22pmZ = (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 that Z score.

**Related Questions**

statistics - The ages of commercial aircraft are normally distributed with a ...

Statistics - find the 90% confidence interval for the variance and standard ...

Statistics - An admissions director wants to estimate the mean age of all ...

statistics - At a large publishing company, the mean age of proofreaders is 36.2...

Statistics - The average age of chemical engineers is 37 years with a standard ...

statistics - The data below are the ages of a random sample of 8 men in a bar. ...

Math Statistics - 5. Students in an introductory statistics class were asked to ...

Statistics - Are these statements true or false? 1. The sample mean, the sample ...

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

statistics - A population is normally distributed with a mean of 40 and a ...