Show the exponential smoothing forecasts using $=0\mathrm{.}1.($Round your answers to three decimal places.$)$

WeekTime Series

ValueForecast$11722132042451718\mathrm{.}294617721818923102111151223$

$($b$)$

Applying the MSE measure of forecast accuracy, would you prefer a smoothing constant of $=0\mathrm{.}1$ or $=0\mathrm{.}2$ for the gasoline sales time series? $($Round your answers to two decimal places.$)$