Consider the following actual (A,) and forecast (F) demand levels for a commercial multiline telephone at Office Max: Time Period Actual Demand Forecast Demand At 50.0 50.00 42.0 50.00 56.0 48.00 46.0 50.00 The first forecast, F,, was derived by observing A, and setting F, equal to A. Subsequent forecasts were derived by exponential smoothing. The smoothing constant (a) used to derive the subsequent forecasts =(round your response to two decimal places). (Hint: To determine a, use either the relationship for period 3 or 4.)