A researcher plans to conduct a research study comparing two treatment condition

Question

A researcher plans to conduct a research study comparing two treatment conditions with a total of 20 scores in each treatment. Which of the following design would require the smallest number of participants to answer her question? A. An independent-measures design B. A matched subjects design C. A repeated measures design D. All of the above would require the same number of participants An ANOVA produces SS_between = 20 with df_between = 2, and ss_within = 30 with df_within = 15. for this analysis, the F-ratio is: A. 2/10 = 0.20 B. 10/2 = 5.00 C. 20/30 = 0.67 D. 30/20 = 1.50

Explanation / Answer

10. F - ratio

= (SSbetween / dfbetween) / (SSwithin / dfwithin)

= (20 / 2) / (30 / 15)

= 10 / 2

= 5.00

Option B is correct.

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