1. Consider n pairs of numbers (x, y),(X, Y),..., and (xy). The mean and standard deviation of the x-values are x =5 and sx = 4, respectively. The mean and standard deviation of the y-values
are ý = 10 and sy = 10 respectively. Of the following, which could be the least squares
regression line?
A) Û = -5.0 + 3.0x
B) 9 = 3.0x
C) 7 = 5.0 + 2,5x
D) 9 = 8.5+ 0.3
E) y = 10.0 +0.40