Scenario 2: Twenty-four chefs are asked to rate the taste of three red wines attributed to different wineries on the label. In actuality it is the same wine in each bottle. Each chef rates each wine-winery label combination in a random order. Between tastings they rinse their mouths with filtered water. The researcher is interested in how taste is affected by what's on the label. For Scenario 2, winery label is an independent variable a dependent variable a constant a noise variable a confound variable