(CO 6) Find the regression equation for the following data set X 245 287 198 189 176 266 210 155 y 50 80 110 78 44 57 51 44 O y = 45.60x - 0.69 y = 45.69x + 0.09 cannot be determined y = 0.09x + 45.89(CO 6) An instructor wants to determine if a longer lesson would improve student test scores. Which variable would be the response variable? O The number of students in the class O The quality of the lesson Student test scores The length of the lesson