Problem 3-22 (Static) Your manager is trying to determine what forecasting method to use Based on the following historical data, calculate the following forecast and specify what procedure you would utilize ACTUAL DEMAND 62 65 MONTH 1 2 3 4 5 68 71 73 96 7 78 80 9 10 11 12 85 a. Calculate the simple three-month moving average forecast for periods 4-12. (Round your answers to 3 decimal places.) Month Three Month Moving Average 4 5 6 7 8 9 10 11 12 b. Calculate the weighted three month moving average for the periods 4-12 using weights of 0.50 (for the period -1); 0.30 (for the period -2) and 0.20 (for the period 1-3). (Round your answers to 1 decimal place.) Month Three Month Weighted Moving Average 1 5 6 7 8 9 10 11 12 e. Calculate the single exponential smoothing forecast for periods 2-12 using an initial forecast (F) of 61 and an a of 0.30. (Round your answers to 3 decimal places.) Month Single Exponential Smoothing Forecast 2 3 4 15 6 7 & c. Calculate the single exponential smoothing forecast for periods 2-12 using an initial forecast (Ff of 61 and an a of 0.30 (Round your answers to 3 decimal places.) Month Single Exponential Smoothing Forecast 2 3 4 5 7 8 9 10 11 12 d. Calculate the exponential smoothing with trend component forecast for periods 2-12 using an initial trend forecast {Ty of 1.8, an Initial exponential smoothing forecast (F) of 60. an a of 0,30, and a 0 of 0.30. (Round your answers to 3 decimal places.) Month Exponential Smoothing with Trend 2 3 5 5 7 8 9 10 12 e-1. Calculate the mean absolute deviation (MAD) for the forecasts made by each technique in periods 412. (Round your answers to 3 decimal places.) Moan Absolute Deviation Three month moving average Three-month weighted moving average Single exponential smoothing forecast Exponential smoothing with trend e-2. Which forecasting method is best? Three-month moving average Single exponential smoothing forecast Exponential smoothing with trend forecast Three-month weighted moving average