regation model racing V X Your professor says, "think that the rhtionship between Y and Xis nories How would you test the adequacy of your linear regression? Check at A There is dance tavor of a non-linear ationship if there is zero comlation batean the depandant and independent variable Badding a quadratic term, you could test the hypothesis that the estimated coefficient of the quadratic term is significantly differs from zero. c. Compare Theft between of naar regression to the non-haar regression model DD. Al of the above