Question: Continuation of Problem 12.12 a. Fit the nonlinear model given in Problem 12.12 using the solution you obtained by linearizing the expectation function as the

Continuation of Problem 12.12

a. Fit the nonlinear model given in Problem 12.12 using the solution you obtained by linearizing the expectation function as the starting values.

b. Test for signifi cance of regression. Does it appear that both variables x1 and x2 have important effects?

c. Analyze the residuals and comment on model adequacy.

d. Which model do you prefer, the nonlinear model or the linear model from Problem 12.12?

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