Given the following$$ data, use exponential smoothing$(\backslash$alpha $=0\mathrm{.}2)$ to develop a

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

Period Demand

$17$

$29$

$35$

$49$

$513$

$612$

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

deviation$($MAD$)?$The$$ Don$$t$-$Drink$-$and$-$Drive mountain bike dealer in the Spokane area wants to be able to forecast accurately the demand for the$$ Don$$t$-$Drink$-$and$-$Drive $2120$ VT bike. From sales$$ records, the dealer has accumulated the following data for the year $2001.$

Compute a$3-$month moving average forecast of demand for the period$$ :Jan, February, and March.