Record the updated forecast for August of 2008 after accounting for trend, seasonality as well as the serial correlation. Save at least 3 decimals in all parts of your calculation. Add a new column to your JMP table. Using the formula option, add the predicted flights (based on trend and seasonality) and the predicted residuals columns (based on the AR(1) model). To create the new column, use the following steps: . . Double click on a new column in the data table. Right-click over the header for this new column and select Formula. Select the Predicted Flights (based on the Trend and Seasonality) next, and press the "+" symbol. Next click on Predicted Residuals Flights. Click OK. Change the column header to "Updated Forecast