2. The National Football League (NFL) records lots of stats on all participating teams. One such stat is the percentage of games won per season (WinPct) and another is the number of passing yards per attempt (Yds/Att). The following data is from the 2011 season. The NFL is interested in the effect of Yds/Att on WinPct. Team Arizona Cardinals Atlanta Falcons Carolina Panthers Chicago Bears Dallas Cowboys New England Patriots Philadelphia Eagles Seattle Seahawks St. Louis Rams Yds/Att 6.5 7.1 7.4 6.4 7.4 8.3 7.4 6.1 5.2 Tampa Bay Buccaneers 6.2 WinPet 50 63 38 50 50 81. 50 44 13 25 (a) Develop the estimated regression equation that could be used to predict the percentage of games won given the average number of passing yards per attempt. Round & 5 to 2 decimal places each. (b) Use the estimated equation in (a) to predict the percentage of games won by the Kansas City Chiefs, whose Yds/Att was 6.2 in 2011. Round to 1 decimal place. 3. A sales manager collected the following data on annual sales for new customer accounts and the number