The journal eCAM (November 2006) published a study of the quality of the research methodology (e.g., statistical analysis) used in medical papers. For each in a sample of 13 research papers, the quality of the methodology on several dimensions was measured, with scores ranging from 1 (low quality) to 3 (high quality). The data in the table below give the scores on three dimensions (labeled What, Who, and How) for each in a sample of 13 papers.

a. One goal of the study is to compare the mean scores of the three research methodology dimensions. Set up the null and alternative hypotheses for this test.
b. Explain why the data should be analyzed using a nonparametric randomized block ANOVA.
c. Conduct the analysis for the researchers. What do you conclude? (Use a = .10.)

Transcribed Image Text:

Paper What Who How N3121 22312N 312 N--221212 I122 1234567890-으