Question: Consider the data in Problem 7.2. a. Fit a second - order model to these data using orthogonal polynomials. b. Suppose that we wish to

Consider the data in Problem 7.2.

a. Fit a second - order model to these data using orthogonal polynomials.

b. Suppose that we wish to investigate the addition of a third - order term to this model. Comment on the necessity of this additional term. Support your conclusions with an appropriate statistical analysis.

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