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April 20, 2014

April 20, 2014

Posted by **peter** on Thursday, April 29, 2010 at 3:35pm.

xbar= 3.05, s1 = .20, n1 = 15, xbar2= 3.25, s2 = .30, n2 = 15, á = .025, left-tailed test.

calculate

d.f. ____________

Standard error ____________

t-calculated ____________

p-value ____________

t-critical ____________

- statistics -
**MathGuru**, Thursday, April 29, 2010 at 7:37pmThis looks like an independent groups t-test.

Here are a few hints:

1. d.f. for an independent groups t-test is this: n1 + n2 - 2

2. Use the denominator of the appropriate t-test as the standard error of the difference between the two means.

3. Use the appropriate t-test to calculate the t-test statistic.

4. P-value is the actual level of the t-test statistic (found using a t-table).

5. T-critical can be found using a t-table with the appropriate degrees of freedom for a one-tailed test.

I hope this will get you started.

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