You used the percentage of alcohol and chlorides to predict wine quality (stored in VinhoVerde ). Use the results from that problem to do the following:. a. Determine whether there is a significant relationship between wine quality and the two independent variables (percentage of alcohol and chlorides)
b. at the 0.05 level of significance, determine whether each independent variable makes a significant contribution to the regression model. On the basis of these results, indicate the in- dependent variables to include in this model.