$\backslash$table$[[$Month$,$Sales,Forecast $1,$Forecast $2],[1,770,771,769],[2,789,785,787],[3,794,790,792],[4,780,784,798],[5,768,770,774],[6,772,768,770],[7,760,761,759],[8,775,771,775],[9,786,784,788],[10,790,788,788]]$

a$.$ Compute the MSE and MAD for each forecast. Does either forecast seem superior? Explain.

b$.$ Compute MAPE for each forecast.

c$.$ Prepare a naive forecast for periods $2$ through $11$ using the given sales data. Compute each of the following: $(1)$ MSE, $(2)$ MAD, $(3)$ tracking signal at month $10,$ and $(4)2s$ control limits$.$ How do the naive results compare with the other two forecasts?

develoned a linear model that it uses to determine the amount of term life insurance a family of four Page $132$