In a multiple regression, the following sample regression equation is obtained:

Question

In a multiple regression, the following sample regression equation is obtained: y^= 148+ 11.7x_1 + 2.4 x_2. a. Predict y if x_1 equals 21 and x_2 equals 44. (Round your answer to 1 decimal place.) y^b. Interpret the slope coefficient of x_1. As increases by one unit, y is predicted to decrease by 2.4 units, holding x_2 constant. As x_1 increases by one unit, y is predicted to decrease by 11.7 units, holding x_2 constant. As x_1 increases by one unit, y is predicted to increase by 2.4 units, holding x_2 constant. As x_1 increases by one unit, y is predicted to increase by 11.7 units, holding x_2 constant.

Explanation / Answer

Answer to the question:

y^ = 148+11.7*x1+2.4x2

a.

x1=21
x2 = 44
y^ = 148+11.7*21+2.4*44
=499.3

b.

As x1 increeases by 1 unit, y is predicted to increases by 11.7 units, holding x2 constant

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