Question: The following table gives the percentage moisture content of two different types of cheeses determined by randomly sampling batches of cheese from the production process
Suppose we assume the normal regression model for these data with one categorical predictor.
(a) Produce a side-by-side boxplot for the data.
(b) Plot the standardized residuals against Cheese (if you are using a computer for your calculations, also produce a normal probability plot of the standardized residuals). Does this give you grounds for concern that the model assumptions are incorrect?
(c) Carry out a one-way ANOVA to test for any differences among the conditional means of Y given CheeseNote that this is the same as a t-test for the difference in the means.