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The All American Toy Company Has Records for Quarterly Sales

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The All American Toy Company has records for quarterly sales for the past 4 years.These data are shown as follows:
The All American Toy Company has records for quarterly sales for the past 4 years.These data are shown as follows: Given these data,develop a forecast for quarter 17 using a double exponential smoothing model with alpha = 0.20,beta = 0.30 and starting values for C and T based on the linear trend regression model for periods 1-16. Given these data,develop a forecast for quarter 17 using a double exponential smoothing model with alpha = 0.20,beta = 0.30 and starting values for C and T based on the linear trend regression model for periods 1-16.

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