Correct!

The question was: What is the uncorrected t-value for the t-test on post-treatment scores?

Your Answer: -5.26

Answer and explanation: Your answer is correct.
The uncorrected t-value is the one where it is assumed that the groups have equal variances. This is uncorrected because it may not be true that the variances are equal. The uncorrected t-value for the post-treatment scores is -5.26.


t 

df 

Sig.
(2-tailed)
 

Mean Diff 

95% Confidence Interval of the Mean Difference

Lower 

Upper 

Equal variances assumed


-5.264 


48 


.000 


-4.049 


-5.596 


-2.503 

Equal variances not assumed (Welch test)


-5.695 


46.42 


.000 


-4.049 


-5.480 


-2.618 


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