a$)$ Use the na$$ve process for one$-$step$-$ahead forecast and calculate RMSE and MAPE.

b$)$ Use ForecastX, choose the simple exponential smoothing model to for ecast the next four

quarters.

c$)$ Use ForecastX, choose Hot$-$Winters to forecast the next four quarters.

d$)$ Compare and contrast the forecast accuracy measurements of the two models in parts $($b$)$

and $($c$)$ in one table. Any comment?

e$)$ Plot your final selected forecasts along with the actual values found in both parts. In one

graph.