Michael's Restaurant is an Edmonton$-$based restaurant that prides itself on serving freshly made

seafood. Every year, they participate in the Taste of Edmonton festival. The festival attendance for

$2007-2022$ is given in the "Data" sheet.

Part $1$: Forecasting Demand

$(3$ pts$.)$ Use Double Exponential Smoothing with $LS=TS=0\mathrm{.}55$ to forecast the festival attendance

for $2023.$ Also, report the RMSE for $2009-2022.$