Your manager is trying to determine what forecasting method to use. Based on the following historical data, calculate the following forecast, and specify what procedure you would use.

$\backslash$table$[[$Month$,$Actual Demand$],[1,62],[2,65],[3,67],[4,68],[5,71],[6,73],[7,76],[8,78],[9,78],[10,80],[11,84],[12,85]]$

Calculate the weighted three$-$month moving average for the periods $4-12$ using weights of $0\mathrm{.}50($for the period $t-1)$; $0\mathrm{.}30($for the period $t-2)$; and $0\mathrm{.}20($for the period $t-3).$ Place answers in the table. Place answers in the table. $($Round all calculations to $3$ decimal places$)(7$ pts$)$

$\backslash$table$[[$Month$,$Three$-$Month Weighted Moving Average$],[4,],[5,],[6,],[7,],[8,],[9,],[10,],[11,],[12,]]$