Calculate the forecast for month $5$ using exponential forecasting using $=0\mathrm{.}25.$

b$)$ Calculate the $2$ month moving average for all available months.

c$)$ Calculate the error for exponential smoothing and the $2$ month MA using MAPE.$$ Which forecasting technique provides the best forecast $($be specific$)?$

$$

Month

Actual Demand

Exponential Forecast

$1$

$22$

$20$

$2$

$23$

$$

$3$

$25$

$$

$4$

$20$

$$

$5$

$$

$$