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March 31, 2015

March 31, 2015

Posted by **Jen** on Thursday, August 20, 2009 at 12:33am.

n1=11,x(bar)=4.8, s1=.76

n2=18, x(bar)=5.2, s2=.51

Assume that σ1 ≠ σ2

Use alpha = .02

I am not sure if this is a 2-sample t test or do I use ANOVA?

Please show me all steps to get to the answer.

- Statistics -
**Jen**, Thursday, August 20, 2009 at 12:35amAlpha = .02

Am I using the 2-sample T test or ANOVA?

- Statistics -
**PsyDAG**, Thursday, August 20, 2009 at 11:52amCalculate Z = (μ1-μ2)/Standard Error (SE) for difference between means.

SE Difference = sq. rt. of (SE1^2 + SE2^2)

SE = Standard Deviation/Sq rt of n-1

Since it is two-tailed, look for Z < .01 to reject null hypothesis.

I hope this helps. Thanks for asking.

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