Given the following data, use exponential smoothing $(=0\mathrm{.}2)$ to develop aThe following is the monthly sales of mugs of Budweiser at the Sports Page during $2001.$

Compute a $3-$month moving average demand forecast for December.

demand forecast for period $6.$ Assume the forecast for the initial period is $5.$

If the demand of period $6$ turns out to be $12,$ what is the mean absolute