Problems $4-6$ are as follows: Two different forecasting techniques $($Forecast $1$ and Forecast $2)$ were used to forecast demand for cases of bottled water. Actual demand and the two sets of forecasts are as follows. $($Round to $3$ decimal places$).$ Predicted Demand Month Actual Demand Forecast $1$ Forecast $21606159270687136568624707169$ Do not round intermediate calculations. If necessary, round the final answer to $4$ decimal places. Problem $4$: Compute the MSE for Forecast $1.$ Problem $5$: Compute the MSE for Forecast $2.$ Problem $6$: Which forecast is more precise?