Using exponential smoothing, the forecasted demand for period 5 using the smoothing constant determined above equals?

Consider the following actual (At) and forecast (Ft) demand levels for a commercial multiline telephone at Office Max: Time Period t Actual Demand , Forecast Demand Ft 1 2 50.0 48.0 56.0 45.0 50.00 50.00 49.40 51.38 3 4 5 ? The first forecast, F7, was derived by observing A, and setting F1 equal to Aq. 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.)