a) Using a three month weighted moving average technique welights 3.4 and 5.5 on the most recent month on the beast recent monthl, estimate the sales for each month Month 3-month WMA Actual sales 58 1 N/A 2 67 N/A 56 N/A 62 15 165 The MAD and MAPE of the forecast you computed in (a) are units and b) Use the exponential smoothing approach with a -0.2 to forecast the sales. Assume that the forecast for Month (1) is 60 units. Month Actual sales 70 Exponential Smoothing 60 2 67 3 68 The MAD and MAPE of the forecast in (b) are units and %