, Then the Y-Intercept of the Least-Squares Regression Line Is $$\text { If } \bar { Y } = 21 , \bar { X } = 6 \text {, and } b = + 1.5 \text {, }$$

Multiple Choice

, then the Y-intercept of the least-squares regression line is $$\text { If } \bar { Y } = 21 , \bar { X } = 6 \text {, and } b = + 1.5 \text {, }$$ .

A) +30.0
B) -12.0
C) +12.0
D) -30.0