The tabulations on the right are actual sales of units for six months and a starting forecast in January =80. 1. Calculate forecasts through August using simple exponential smoothing with =0.2. 2. Using a three-month weighted moving average with weights w1=0.5,w2=0.3, and w3=0.2, calculate forecasts for April through August. Apply a larger weight to a more recent observation. 3. Calculate MAD for the forecasts in (1) and (2) above