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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. d. Calculate the exponental smoothing with trend component forecast for periods 2-12 using an initial trend forecast (T) of 1.80 , an initial exponential smoothing forecast (F) of 62 , an of 0.30 , and a of 0.40 . (Do not round intermediate calculations. Round your onswers to 3 decimol places.) 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.) e-2. Which forecasting method is best? Three-month weighted moving average Single exponential smoothing forecast Exponential smoothing with trend forecast Three-month moving average 0. Calculate the simple three-month moving average forecast for periods 4-12. (Round your answers to 3 decimal places.) \begin{tabular}{|c|c|} \hline Month & Three-MonthMovingAverage \\ \hline 4 & 66667 \\ \hline 5 & 67.333 \\ \hline 6 & 68.667 \\ \hline 7 & 69667 \\ \hline 8 & 72.333 \\ \hline 9 & 74.333 \\ \hline 10 & 76.000 \\ \hline 11 & 78.000 \\ \hline 12 & 79667 \\ \hline \end{tabular} b. Calculate the weighted three-month moving average for periods 412 using weights of 0.40 (for the period t1 ); 0.40 (for the period t-2), and 0.20 (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 2 -12 using an Initial forecast ( F, of 63 and an of 0.30 . (Do not round intermediate calculations. Round your onswers to 3 decimal ploces.)