The following tabulations are actual sales of units for six months and a starting forecast in January. ACTUAL FORECAST January 95 75 February 93 March 102 April 78 May 72 June 108 a. Calculate forecasts for the remaining five months using simple exponential smoothing with = 0.4. b. Calculate the MAD for all the forecasts, including January's. (Round your answer to 1 decimal place.)