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Part $1$

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