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The test of the correct hypotheses in Q7.1 yield a t-test statistic of t t=-2.2923 with p p=0.038 and d ^ d ^ =-0.8658, suggesting
The test of the correct hypotheses in Q7.1 yield a t-test statistic of t t=-2.2923 with p p=0.038 and d ^ d ^ =-0.8658, suggesting that there is strong evidence of a difference of mean RDI levels across male and female patients with traumatic brain injuries. The effect size describing the difference between these means is quite large, suggesting that the assumption of equal means between men and women is is very inaccurate at describing the two populations being studied. As a follow-up, the researchers computed a 95% confidence interval to provide a range of plausible values for the true difference in mean RDI levels, 1 2 1 2 : ( 2.067 , 0.0668 ) (2.067,0.0668). Given this confidence interval, is the statement below accurate? There is a 95% chance that the true difference in RDI levels between men and women is contained in the interval above. Choice 1 of 2: correct Choice 2 of 2: incorrect
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