Refer to the gasoline sales time series data in the given table. 0. Compute four-week and five-week moving averages for the time series. Round your answers to two decimal places. b. Compute the MSE for the four-week and five-week moving average forecasts. Round your intermedote cakculations and final anfyers to two deckmal places MSE for four-week moving average = MSE for five-week meving arerage = What appears to be the bet number of weeks of past data (three, four, or fove) to use in the monng average camputation? Recall that MSt loe the three week moving average in 10.19