Question: Continuing the previous exercise, compute the cross-validation function (or alternatively the AIC) for polynomial orders 1 through 8. (a) Which order minimizes the function? (b)

Continuing the previous exercise, compute the cross-validation function (or alternatively the AIC) for polynomial orders 1 through 8.

(a) Which order minimizes the function?

(b) Plot the estimated regression function along with 95% pointwise confidence intervals.

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