Sales of Volkswagens have grown steadey at auto doalerships in Nevada during the past 5 years (see table below) Using exponential smoothing with a smoothing constant (a) of 0.30 and a star forecast of 415,00 , the following sales forecast has been developed: The MAD for a forecast developed using exponential smoothing with a=0.30 is sales (round your response to ho decimal places). Forecasted saies for years 2 ehrough 6 using exponemial smoching with =0,60 and a starting forecast of 41500 are (round your respontes fo hro decimal ploces): The MAD for a forecast developed using exponental smoothing with a =0.60 is sales (round your rosponse fo two decimal places)