Your manager is trying to determine what forecasting method to use. Based upon the following historical data, calculate the following forecast and specify what procedure you would utilize. MONTH 1 3 4 5 6 7 ACTUAL DEMAND 63 66 68 69 70 72 73 73 73 76 85 80 8 9 10 11 12 a. Calculate the simple three-month moving average forecast for periods 412. (Round your answers to 3 decimal places.) a. Calculate the simple three-month moving average forecast for periods 412. (Round your answers to 3 decimal places.) Answer is complete and correct. Month Three-Month Moving Average 4 65.670 5 67.670 6 69.000 7 70.330 8 71.670 9 72.670 10 73.000 11 74.000 12 78.000 b. Calculate the weighted three-month moving average for periods 412 using weights of 0.50 (for the period t-1); 0.40 (for the period t-2), and 0.10 (for the period t3). (Do not round intermediate calculations. Round your answers to 1 decimal place.) Answer is complete and correct. Month Three-Month Weighted Moving Average 4 66.7 5 68.3 6 69.4 CICIO 7 70.9 8 72.3 9 72.9 10 73.0 11 74.5 12 80.2 C. Calculate the single exponential smoothing forecast for periods 212 using an initial forecast (F1) of 62 and an a of 0.30. (Do not round intermediate calculations. Round your answers to 3 decimal places.) Answer is complete and correct. Month Single Exponential Smoothing Forecast 2 62.300 3 63.410 4 64.790 5 66.050 6 67.240 7 68.660 8 69.970 9 70.880 10 71.510 11 72.860 12 76.500 d. Calculate the exponential smoothing with trend component forecast for periods 212 using an initial trend forecast (T1 of 1.90, an initial exponential smoothing forecast (Ft) of 61, an a of 0.30, and a d of 0.30. (Do not round intermediate calculations. Round your answers to 3 decimal places.) Answer is not complete. Month 2 Three-Month Weighted Moving Average 0.000 X 0.000 X 2.300 X 3 4 5 1.700 X 6 2.600 X 7 8 9 10 11 12 e-1. Calculate the mean absolute deviation (MAD) for the forecasts made by each technique in periods 412. (Do not round intermediate calculations. Round your answers to 3 decimal places.) Answer is complete but not entirely correct. Mean Absolute Deviation 3.220 Three-month moving average Three-month weighted moving average Single exponential smoothing forecast Exponential smoothing with trend 2.580 4.320 X 3.140 x e-2. Which forecasting method is best? Three-month weighted moving average Three-month moving average * Exponential smoothing with trend forecast Single exponential smoothing forecast