Chapter 14: Problem 34
This exercise requires the use of a computer package. The accompanying data resulted from a study of the relationship between \(y=\) brightness of finished paper and the independent variables \(x_{1}=\) hydrogen peroxide \((\%\) by weight), \(x_{2}=\) sodium hydroxide (\% by weight), \(x_{3}=\) silicate (\% by weight), and \(x_{4}=\) process temperature (“Advantages of CE-HDP Bleaching for High Brightness Kraft Pulp Production," TAPPI [1964]: \(107 \mathrm{~A}-173 \mathrm{~A})\). a. Find the estimated regression equation for the model that includes all independent variables, all quadratic terms, and all interaction terms. b. Using a .05 significance level, perform the model utility test. c. Interpret the values of the following quantities: SSResid, \(R^{2},\) and \(s_{e}\)
Short Answer
Step by step solution
Key Concepts
These are the key concepts you need to understand to accurately answer the question.