The demand for a consumer product is fairly constant from week to week. The previous nine weeks of demand is shown below. (Note: at is the actual period's demand.) Use the information to produce a single exponential smoothing forecast for period 10 using a smoothing constant, , equal to 0.20 . Use 404 as the initial forecast. Click the icon to view the demand for the previous 9 weeks. Filin the table below for a single exponential smoothing forecast (enter your responses roundod to one decimal place). The forecast for period 10 is (Enter your response rounded to one decimal place.) \begin{tabular}{cc} \hline Period & at \\ \hline 1 & 404 \\ 2 & 486 \\ 3 & 327 \\ 4 & 321 \\ 5 & 415 \\ 6 & 370 \\ 7 & 314 \\ 8 & 399 \\ 9 & 502 \\ \hline \end{tabular}