Question: In Problem 4.4, you fit a curvilinear relationship between the change in rate of growth G in growth hormone Htreated children and their native H

In Problem 4.4, you fit a curvilinear relationship between the change in rate of growth G in growth hormone H–treated children and their native H levels at the time treatment started. Fit these data (Table D-15, Appendix D) to the equation, . Is there evidence that this is a better fit to the data than a linear regression? Evaluate the residuals and correct any problems, if necessary. Is the investigators’

hypothesis that this should be a nonlinear relationship supported?

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