Look at the following output, which compare the amount of spasticity measured in

Question

Look at the following output, which compare the amount of spasticity measured in patients with multiple sclerosis after treatment to those who were yet waiting to undergo treatment (control group). Measures were 0-no spasticity; 5 = much spasticity), which of the following are correct conclusions, based on this output? (Select all that apply) Group Treatment N Mean SD 1.435 .853 SEM 414 246 12 1.67 Control 12 4.0 Levine's test for equality of variances t-test for equality of means Sig T Df Sig (2-Mean (2-1 Mean |Std error | 95% Cl of the tailed) difference difference difference 000 Lower Upper 1.334 3.333 Equal 3.667 069 4.841 22 variance assumed 2.33 2.333 482 375 33 2 4.841 17.905 000 -2.333 482 1.320 3.346 assumed Select one or more: a. Treatment significantly reduced spasticity. b. The assumption of normal distribution was met C. The assumption of homoscedasticity was met. d. Treatment effect size was small e. You can be 95% sure that mean difference in spasticity in the population is likely to be between 1.33 and 3.33. f. Scores in the control group are more variable than in the treatment group

Explanation / Answer

ans-> c) The assumption of homescedasticity was met.

e) You can be 95% sure that mean difference in spasticity in the population is likely to be between 1.33 and 3.33

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