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The value for alpha or a must be between which of the following when it is used in an exponential smoothing model?
A) 1 to 10
B) 1 to 2
C) 0 to 1
D) -1 to 1
2. Forecasting labour supply and demand can use statistical methods or: a) Events b) Trends c) Judgement d) Downsizing e) Estimation