Plot the standardized residuals against cheese

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Reference no: EM131754012

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

1857_Cheese.png

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.

Reference no: EM131754012

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