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# Given random variables y, x1, and x2, consider the model E(y|x1,x2)= 0+1x1+2x2+3x22+4x1x2 a. Find the partial effects of x1 and x2 on E(y|x1,x2)

Given random variables y, x1, and x2, consider the model E(y|x1,x2)= β0+β1x1+β2x2+β3x22+β4x1x2
a. Find the partial effects of x1 and x2 on E(y|x1,x2)
b.Writing the equation as y=β0+β1x1+β2x2+β3x22+β4x1x2+u
what can be said about E(u|x1,x2)? What about E(u| x1, x2, x22,x1x2 )?

Given random variables y, x1, and x2, consider the model E(y|x1,x2)= β 0 1 x 1 2 x 2 3 x 2 2 4 x 1 x 2 a. Find the partial effects of x1 and x2 on E(y|x1,x2) b.Writing the equation as y=β 0 1 x 1 2 x 2 3 x 2 2 4 x 1 x 2 +u what can be said about E(u|x 1 ,x 2 )? What about E(u| x 1, x 2, x 2 2 ,x 1 x 2 )?

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