12. Excel Problenm REQUIRED Use Excel's regression tools to analyze and forecast future sales. (Hint: The article "Forecasting with Excel," by James A. Weisel in the February 2009 issue of the Journal of Accountancy (available at www.aicpa.org) explains how to perform the following tasks using either Excel 2003 or Excel 2007.) a. Create a spreadsheet with the following data about targeted e-mails, click ads, and unit sales: UNIT SALES E-MAILS 150000 155000 125000 130000 135000 120000 125000 130000 130000 120000 100000 110000 100000 140000 CLICKS 100 105 75 150 125 100 125 135 110 95 75 100 80 130 12,000 12,500 10,000 14,000 12,500 10,000 10,900 11,500 12,500 10,500 10,750 10,000 9,500 13,500