evelop a three$-$week moving average for this time series. Compute MSE and a forecast for week $8.$

If required, round your answers to two decimal places. Do not round intermediate calculation.

MSE:

$7\mathrm{.}03$

The forecast for week $8$:

$18\mathrm{.}33$

$($c$)$ Use $\backslash$alpha $=0\mathrm{.}2$ to compute the exponential smoothing values for the time series. Compute MSE and a forecast for week $8.$

If required, round your answers to two decimal places. Do not round intermediate calculation.

MSE:

The forecast for week $8$:

$($d$)$ Compare the three$-$week moving average forecast with the exponential smoothing forecast using $\backslash$alpha $=0\mathrm{.}2.$ Which appears to provide the better forecast based on MSE?