Question: A textbook publishing company has compiled data on total annual sales of its business texts for the preceding nine years: Year Sales (000): 2 5

A textbook publishing company has compiled data

A textbook publishing company has compiled data on total annual sales of its business texts for the preceding nine years: Year Sales (000): 2 5 6 7 8 40.20 44.50 48.00 52.30 55.80 57.10 62.40 69.00 73.70 Click here for the Excel Data File a. Using an appropriate model, forecast textbook sales for each of the next five years. (Round your intermediate calculations to 3 decimal places and final answers to 2 decimal places.) Year 11 13 14 10 76.00 12 84.00 Forecast 80.00 92.10 b. Compute +/- 2s control limits for the control chart for forecast errors using just data from the original nine periods. (Round your intermediate calculations to 4 decimal places and final answer to 2 decimal places.) Control limits are 0+

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