The question was: What is the uncorrected t-value for the t-test on post-treatment scores?
Your Answer: -5.48
Answer and explanation: Your answer is incorrect. The correct answer is -5.26.
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. -5.48 is the lower bound of the confidence interval for the corrected
t-value.
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t |
df
|
Sig.
(2-tailed) |
Mean Diff
|
95% Confidence Interval
of the Mean Difference
|
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Lower
|
Upper
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Equal variances assumed |
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Equal variances not assumed (Welch test) |
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