8 K Sales of Volkswagen's popular Beetle have grown steadily at auto dealerships in Nevada during the past 5 years (see table below). D a) Forecasted sales for year 6 using a 3-year moving average is b) The MAD for a 3-year moving average based forecast is c) The MSE for a 3-year moving average based forecast is Year 1 2 3 4 5 Sales 455 510 518 570 585 sales (round your response to one decimal place). sales (round your response to one decimal place). sales (round your response to the nearest whole number).

a) Forecasted snles for year. 6 using a 3 year moving averege is sales (round your response fo one decimai ploce) b) The MuD for a Jyear meving average based forecast is sales (round your response to one docimal place). c) The MSE for a 3-year moving average based forecast is sales (round your rosponse to the neareat whoie number)