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## For this problem, use the multiple regression equation below to complete parts (a) and (b).

For this problem, use the multiple regression equation below to complete parts (a) and (b).

Y^ = 10 + 5X1i + 3x2i

### a. Interpret the meaning of the slopes.

A. If Upper X1 increases one unit, Y increases 5 units. If Upper X2 increases one unit, Y increases 3 units.

B. If Upper X2 is constant, when Upper X1 increases one unit, Y increases 3 units. If Upper X1 is constant, when Upper X2 increases one unit, Y increases 5 units.

C. If Upper X2 is constant, when Upper X1 increases one unit, Y increases 5 units. If Upper X1 is constant, when Upper X2 increases one unit, Y increases 3 units.

D. If Upper X1 increases one unit, Y increases 3 units. If Upper X2 increases one unit, Y increases 5 units.

### b. Interpret the meaning of the y - intercept

b. Interpret the meaning of the Y-intercept.

A. The Y-intercept 5 is the estimate of the mean value of Y if Upper X1 is 0.

B. The Y-intercept 10 is the estimate of the mean value of Y if Upper X1 is 0.

C. The Y-intercept 10 is the estimate of the mean value of Y if Upper X1 and Upper X 2

are both 0.

D. The Y-intercept 5 is the estimate of the mean value of Y if Upper X1 and Upper X 2

are both 0.