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The exponential smoothing forecast for period t + 1 is a weighted average of the a. forecast value in period t with weight α and the actual value for period t with weight 1 - α. b. actual value in period t + 1 with weight α and the forecast for period t with weight 1 - α. c. forecast value in period t - 1 with weight α and the forecast for period t with weight 1 - α. d. actual value in period t with weight α and the forecast for period t with weight 1 - α.
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