A researcher wants to find out if people have preferences in taste of three kinds of peanut butter (Brand A, Brand B, and Brand C). Eight participants are each asked to taste the three brands of peanut butter in random order. The participants are asked to rate the taste of each peanut butter on a 20-point scale (without knowing which brand is which). A high score is a more positive rating. Conduct the Friedman's Rank Test for k correlated samples (²_F) using an alpha of .05. Also, conduct a post hoc analysis using the Wilcoxon's Matched-Pairs Signed-Ranks Test.

What is the independent variable in this second research problem?

Group of answer choices

taste of peanut butter

brand of peanut butter

rating scores of taste peanut butter

Brand A, Brand B, Brand C

What is the dependent variable?

Group of answer choices

taste of peanut butter

brand of peanut butter

rating scores of taste peanut butter

Brand A, Brand B, Brand C