Thursday

March 5, 2015

March 5, 2015

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.

**Answer this Question**

**Related Questions**

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

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

Statistics - The marks of 100 students in an examination are normally ...

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

Statistics - The average grade point average(GPA)of undergraduate students in ...

Statistics - `The average grade point average (GPA) of undergraduate students in...

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 ...

Statistics - Suppose you administered an anxiety test to a large sample of ...

statistics - Suppose you administered an anxiety test to a large sample of ...