a$)$ Assuming an initial forecast for week $1$ of $16,000$ miles, use exponential smoothing to compute miles for weeks $2$ through $12.$ Use $=0\mathrm{.}22($round your responses to two decimal places$).$

b$)$ The MAD for this model $=$

thousand $($round your response to two decimal places$).$

c$)$ Compute the Cumulative Forecast Errors, cumulative MAD in thousands, and tracking signals $($round your responses to two decimal places$).$

Are the tracking signals within acceptable limits$?$