A statistical analysis was conducted to compare standardized test scores between

Question

A statistical analysis was conducted to compare standardized test scores between the study and control groups. Table 3a and 3b shows partial results. Based on case #3, which statistical analysis was performed? a) Fisher exact test b) Independent t-test c) paired t-test d) Mann-Whitney U test Based on case #3, what alpha level is used in this analysis? a) 0.010 b) 0.013 c) 0.025 d) 0.050 Based on case #3, what p-value should be reported to indicate whether or not there is a statistical difference? a) 0.010 b) 0.013 c) 0.025 d) 0.050 Based on case #3, the BEST interpretation is that the scores in the study group are____ than those in the control group. a) significantly higher. b) significantly lower c) neither higher nor lower There are two statements about F -ratio. Which statement(s) is/are correct? i. The larger the F -ratio, the larger the p-value. ii. When F -ratio is smaller than the critical value, we fail to reject H_0 a) Only is correct b) Only is correct c) Both and are correct d) Neither nor is correct

Explanation / Answer

14. Option b is correct: significantly lower

15. Option b is correct: Only (ii) is correct.

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