In a regression analysis involving 30 observations, the following estimated regression equation was obtained.ŷ = 18.6 + 3.7x, - 2.2x2 + 7.9x3 + 2.6x4(a) Interpret b, in this estimated regression equation.= 3.7 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x3, and x, are held constant.= -2.2 is an estimate of the change in y corresponding to a 1 unit change in x, when x2, x3, and x are held constant.O b1= 7.9 is an estimate of the change in y corresponding to a1 unit change in x, when x,, x2, and x, are held constant.O b,O b, = 3.7 is an estimate of the change in y corresponding to a 1 unit change in x,= 2.6 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x2, and x3 are held constant.whenand x4are held constant.Interpret b, in this estimated regression equation.O b2 = 2.6 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x2, and x, are held constant.= 7.9 is an estimate of the change in y corresponding to a1 unit change in x,O b2O b, = 3.7 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x2, and x, are held constant.whenand x, are held constant.%3DO b2 == -2.2 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x3, and x, are held constant.= -2.2 is an estimate of the change in y corresponding to a 1 unit change in x, when x2, x3, and x, are held constant.O b2Interpret b, in this estimated regression equation.= 3.7 is an estimate of the change in y corresponding to a1 unit change in x3 when x,, X2,O b3andX4are held constant.O b3 = 7.9 is an estimate of the change in y corresponding to a 1 unit change in x3 when x,, x2, and x4 are held constant.O b3 = -2.6 is an estimate of the change in y corresponding to a 1 unit change in x4whenXq, X2, and x3are held constant.O b,= 7.9 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x3, and x, are held constant.O b3 = -2.2 is an estimate of the change in y corresponding to a 1 unit change in x,whenX2, X3, and x. are held constant.Interpret b, in this estimated regression equation.O b, = 2.6 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x2, and x, are held constant.O b, = 2.6 is an estimate of the change in y corresponding to a 1 unit change inX3whenX, X2, and x4are held constant.O b4 = 3.7 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, X2, and x3 are held constant.b. = 7.9 is an estimate of the change in y corresponding to a 1 unit change in x,when x,, X3, and x, are held constant.%3D4= -2.2 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x3, and x, are held constant.O b4(b) Predict y when x, = 10, x2 = 5, x3 = 1, and x4 = 2.

Given : The regression Line Here coefficient of x values : b1 = 3.7b2 = -2.2b3 = 7.9b4 = 2.6…

(a) Interpret b, in this estimated regression equation. O b, = 3.7 is an estimate of the change in y corresponding to a 1 unit change in x,2 when x, X3, and x4 are held constant. O b, - -2.2 is an estimate of the change in y corresponding to a 1 unit change in x, when x2, x3, and x4 are held constant. O b, = 7.9 is an estimate of the change in y corresponding to a 1 unit change in x3 when x,, X2, and x4 are held constant. O b, = 2.6 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x2, and x3 are held constant. O b, = 3.7 is an estimate of the change in y corresponding to a 1 unit change in x, when x2, X3, and x4 are held constant. Interpret b, in this estimated regression equation. O b2 = 2.6 is an estimate of the change in y corresponding to a 1 unit change in x4 when x, X2, and x3 are held constant. O b, = 7.9 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x2, and x, are held constant. O b2 = 3.7 is an estimate of the change in y corresponding to a 1 unit change in x, when x2, X3, and x4 are held constant. O b2 = -2.2 is an estimate of the change in y corresponding to a 1 unit change in x, when x, x3, and x, are held constant. O b2 = -2.2 is an estimate of the change in y corresponding to a1 unit change in x, when x2, X3, and x4 are held constant. %3D Interpret b, in this estimated regression equation. O b; = 3.7 is an estimate of the change in y corresponding to a 1 unit change in x, when x, x2, and x4 are held constant. O b3 = 7.9 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x2, and x, are held constant. O b; = -2.6 is an estimate of the change in y corresponding to a 1 unit change in x4 when x, x2, and x3 are held constant. O b, = 7.9 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x3, and x, are held constant. O b; = -2.2 is an estimate of the change in y corresponding to a 1 unit change in x, when x, X3ı and x, are held constant. Interpret b, in this estimated regression equation. O b, = 2.6 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x2, and x3 are held constant. O b, = 2.6 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x2, and x, are held constant. O b, = 3.7 is an estimate of the change in y corresponding to a 1 unit change in x4 when x,, x2, and x3 are held constant. O b, = 7.9 is an estimate of the change in y corresponding to a 1 unit change in x, when x,, x3, and x3 are held constant. O b, = -2.2 is an estimate of the change in y corresponding to a 1 unit change in x2 when x, x3, and x4 are held constant. (b) Predict y when x, - 10, x2 - 5, x3 - 1, and x4 - 2.