Question: 7.9 Consider the regression model Yi = b0 + b1X1i + b2X2i + ui. Use approach 2 from Section 7 .3 to transform the regression

7.9 Consider the regression model Yi = b0 + b1X1i + b2X2i + ui. Use approach 2 from Section 7 .3 to transform the regression so that you can use a t-statistic to test

a. b1 = b2.

b. b1 + 2b2 = 0.

c. b1 + b2 = 1. (Hint: You must redefine the dependent variable in the regression.)

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