$$a$)$ MADLOADING... for the forecast developed by the$$ management's technique$=$

$$

$18$ sales $($round your response to two decimal$$ places$).$

Part $3$

MAPELOADING... for the forecast developed by the$$ management's technique$=$

$$

$18\mathrm{.}84\%($round your response to two decimal$$ places$).$

Part $4$

$$b$)$ Using the Naive MethodLOADING...$,$ the forecast for period March through June is $($round your response to two decimal$$ places$)$: