Next, consider using a simple exponential smoothing model. In your analysis, test two alpha values, programmed to use one of two forecasting models: simple moving average or exponential smoothing. $\mathrm{.}2$ and $\mathrm{.}4.$ Use the same criteria for evaluating the model as in part $1.$ When using an alpha value of $\mathrm{.}2,$ assume that the forecast for week $1$ is the past three$-$week average $($the average demand for periods $3,2,$ and $1).$ For the model using an alpha of $\mathrm{.}4,$ assume that the forecast for week $1$ is the past five$-$week average.