4 Given the following demand data, compute a simple exponential smoothing forecast for alpha values of 0.3 and 0.5. Use the actual value in Period 1 as your starting forecast in Period 2. (Round all your calculations to two decimal points.) 10 points Period 1 2 4 4 5 6 7 8 9 10 11 Actual Demand 30 31 29 28 28 26 24 24 22 21 23 eBook Print References a = 0.3 a = 0.5 Period Forecast Forecast 1 2 3 4 5 6 7 8 9 10 11 12