QUESTION 46 "A dependent sample t-test with a df = 18 determined that the mean difference of 7.25 was significantly higher after treatment. Assuming the standard error of th differences 1.21, construct a 95% confidence interval to estimate the population mean difference." O 95% CI = 4.71 to 9.79 O 95% CI = 3.77 to 10.73 O 95% CI =5,15 to 9.35 O 95% CI = 2.88 to 11.62

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