ANOVA & ANOCOV

A food manufacturing company is interested in modeling whether people prefer x1 2 Type A or Type E! hotdog buns with their hot dogs. They also want to control for x: 2 different amounts of sodium in the hot dogs themselves. and are testing the hot dog buns at a variety of sodium contents1 giving each taster both a hot dog and a bun with no condiments. The response variable is y = perceived taste of the hun. on a scale of 1 to 111. (a) In order to nd out whether Type A or Type B is preferred. is it necessary to have an interaction term? Why or why not? (is) Develop a linear model for this study, interpreting all parameters in the context of the problem. Write down your hypotheses to he tested in terms of your model parameters. (You don 't have any data to conduct the test: just write down the hypotheses.) (c) Whether or not you added an interaction term atiove1 assume now that it was added and it is significant. How should we interpret this interaction in context