Is there a relationship between total team salary and team performance in a sport such as professional football? To answer this question we will examine the number of wins and total team payroll in a recent season for all the teams in the National Football League (NFL). The data are in this Excel file. Question 1. Let the x-variable be the team payroll and let the y-variable be the team wins. Find the intercept b0 and slope b1 of the least squares prediction line (Wins)^^\^ = b0 + b1*Payroll.