a. How would you compute appropriate cross-product terms for testing the interaction of WEIGHT and dosage level

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a. How would you compute appropriate cross-product terms for testing the interaction of WEIGHT and dosage level of toluene for Problem 9?
b. State the appropriate regression model.
c. State the null hypothesis (of no interaction) in terms of regression coefficients.
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Applied Regression Analysis and Other Multivariable Methods

ISBN: 978-1285051086

5th edition

Authors: David G. Kleinbaum, Lawrence L. Kupper, Azhar Nizam, Eli S. Rosenberg

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