Question: Refer to the hudson Marine problem in exercise 52. Suppose the quarterly sales values for the seven years of historical data are as follows. a.

Refer to the hudson Marine problem in exercise 52. Suppose the quarterly sales values for the seven years of historical data are as follows.

a. Use the following dummy variables to develop an estimated regression equation to account for any season and linear trend effects in the data: Qtr1 = 1 if Quarter 1, 0 otherwise; Qtr2 = 1 if Quarter 2, 0 otherwise; and Qtr3 = 1 if Quarter 3, 0 otherwise.
b. Compute the quarterly forecasts for next year.

Total Yearly Sales 35 Year Quarter 1 Quarter 2 Quarter 3 Quarter 4 10 15 18 9 10 19 24 12 75 21 20 27 105 110 130 28

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