3. 4. 5. Consider the following gasoline sales time series. If needed, round your answers to two-decimal digits. Week Sales (1,000s of gallons) 1 17 2 23 3 14 4 25 5 17 16 7 22 8 19 9 21 10 19 11 17 23 12 (a) Show the exponential smoothing forecasts using a 0.1, and a 0.2. Exponential Smoothing Week a=0.1 0 0.2 13 (b) Applying the MSE measure of forecast accuracy, would you prefer a smoothing constant of o 0.1 or a 0.2 for the gasoline sales time series? An-Select your answer-smoothing constant provides the more accurate forecast, with an overall MSE of (e) Are the results the same if you apply MAE as the measure of accuracy? An-Select your answer smoothing constant provides the more accurate forecast, with an overall MAE of (d) What are the results if MAPE is used? An -Select your answer smoothing constant provides the more accurate forecast, with an overall MAPE of