$1403$

$2400$

$3355$

$4428$

$5312$

$6317$

$7355$

$8$

$401$

$9$

$382$

B$.)$ Compute the $4-$period weighted moving average forecasts using the weights$=0\mathrm{.}16,0\mathrm{.}24,0\mathrm{.}35$ and $0\mathrm{.}25.$ Compute the MAD and MSE for the $4-$period weighted moving average.