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

Question

In a multiple regression, the following sample regression equation is obtained y-hat = 152 + 12.9x1 + 2.7x2. a. Predict y if x1 equals 20 and x2 equals 35. (Round your answer to 1 decimal place.) y-hat b. Interpret the slope coefficient of x O As x1 increases by one unit, y is predicted to decrease by 2.7 units, holding x2 constant. O As x1 increases by one unit, y is predicted to decrease by 12.9 units, holding x2 constant. O As X1 increases by one unit, y is predicted to increase by 2.7 units, holding X2 constant. O As x1 increases by one unit, y is predicted to increase by 12.9 units, holding x2 constant.

Explanation / Answer

Putting the values of x1 and x2 in the regression equation we get y=152+12.9*20+2.7*35=504.5

the right answer is D, as x1 is increased by 1 unit, y predicted increases by 12.9 if we hold x2 constant

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