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Concept explainers
Using the data for Problem 16.15 on page 646 that represent U.S. total computer and software sales
a. fit a third-order autoregressive model to the total sales and test for the significance of the third-order autoregressive parameter.
b. if necessary, fit a second-order autoregressive model to the total sales and test for the significance of the second-order autoregressive parameter.
c. if necessary. fit a first-order autoregressive model to the total sales and test for the significance of the first-order autoregressive parameter.
d. if appropriate, forecast the total sales in 2013.
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Chapter 16 Solutions
Student Solutions Manual for Basic Business Statistics
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