A statistics professor wants to see if they can predict a student's final test score based on their test score from an earlier test. Data from a past class was gathered and the variables from n = 40 students were: x1 = test1 score, x2 = test2 score, and y = final test score.

40 40 40 40 12 = 2616, Ly = 3221.2, (12-12)? =3336.94, (12-12)(y-7) = 3637.26 1=1 1=1 i=1 1=112 74