Sales of Volkswagen's popular Beetle have grown steadily at auto dealerships in Nevada during the past 5 years (se Year 1 2 3 4 5 Sales 450 495 518 563 580 a) Forecasted sales for year 6 using a 3-year moving average is 553.7' sales (round your response to one decimal place b) The MAD for a 3-year moving average based forecast is 65.0 sales (round your response to one decimal place). c) The MSE for a 3-year moving average based forecast is 88 sales (round your response to the nearest whole number). Help Me Solve This Video Get More Help