Question: Referring to Problem 13 60 instead of predicting the unit density
Referring to Problem 13.60, instead of predicting the unit density, you now wish to predict the foam diameter from results stored in PackagingFoam4 . Develop a multiple regression model that uses die temperature and die diameter to predict the foam diameter (mg/ ml). Be sure to perform a thorough residual analysis. Do you think that you need to use both independent variables in the model? Explain.
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