Question: 16.39 Using the data file Product Sales, estimate autoregressive models of orders 14 for product sales. Using the procedure of Section 16.4 for testing the

16.39 Using the data file Product Sales, estimate autoregressive models of orders 1–4 for product sales. Using the procedure of Section 16.4 for testing the hypothesis that the autoregressive order is p - 1 against the alternative that the order is p, with a significance level of 10%, choose one of these models.

Compute forecasts for the next 3 years from the chosen model.

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