Kour manager is trying to determine what forecasting method to use. Based upon the following historical data, calculate the following orecast and specify what procedure you would utilize. Calculate the simple three-month moving average forecast for periods 4-12. (Round your answers to 3 decimal places.) b. Laculate the weigntea inree-montn moving average tor peroas 4- 1 using weignts or U.4U (tor the perioa 1) ); U.5U (tor the perioa t2 ), and 0.10 (for the period t3 ). (Do not round intermediate calculations. Round your answers to 1 decimal place.) c. Calculate the single exponential smoothing forecast for periods 212 using an initial forecast (F1) of 58 and an of 0.40 . (Do not round intermediate calculations. Round your answers to 3 decimal places.) d. Calculate the exponential smoothing with trend component forecast for periods 212 using an initial trend forecast ( T ) of 1.50 , an initial exponential smoothing forecast (F) of 57 , an of 0.40 , and a of 0.40 . (Do not round intermediate calculations. Round your answers to 3 decimal places.) e-1. Calculate the mean absolute deviation (MAD) for the forecasts made by each technique in periods 4-12. (Do not round intermediate calculations. Round your answers to 3 decimal places.)