Page $180$ Problem #$5-33$ Use the data from this problem to do the following:

A$)$ Using a weighted moving average of $2$ time periods, forecast the income for August. Use a weight of $2$ for the most recent time, and a weight of $1$ for the next most recent.

B$)$ Assuming an initial forecast of $72(1000$s$)$ for February, use exponential smoothing to forecast income for August. Use alpha $=\mathrm{.}7$

C$)$ Using a moving average of $2$ time periods, forecast the income for August.

D$)$ Calculate the MAD for each forecasting technique and determine which is the most accurate? Why?