3. A firm experienced the demand shown in the following table. a. Fill in the table by preparing forecasts based on a five-year moving average, a three-year moving average, and exponential smoothing ( with a w=0.9 and aw=0.3 ). Note: The exponential smoothing forecasts may be begun by assuming (Yt+1)=(Yt) b. Using the forecasts from 2018 through 2022 , compare the accuracy of each of the forecasting methods based on the RMSE criterion. c. Which forecast would you have used for 2023? Why