The accompanying dataset provides the closing prices for four stocks and the stock exchange over 12 days. Complete parts a through c. Click the icon to view the closing prices data. a. Use Excel's Data Analysis Exponential Smoothing tool to forecast each of the stock prices using simple exponential smoothing with a smoothing constant of 0.3. Complete the exponential smoothing forecast model for stock A (Type integers or decimals rounded to two decimal places as needed.) Date Forecast A 09/03/2010 09/07/2010 126.68 09/08/2010 126.15 09/09/2010 126.49 09/10/2010 120.27 09/13/2010 126.85 09/14/2010 127.33 09/15/2010 127.91 09/16/2010 128.25 09/17/2010 128.95 09/20/2010 129.05 09/21/2010 129.75