Consider the Following Multiple Regression Model

question 49

Essay

Consider the following multiple regression model
Y_i = ?₀ + ?₁X_1i + ?₂X_2i + ?₃X_3i + u_i
You want to consider certain hypotheses involving more than one parameter, and you know that the regression error is homoskedastic. You decide to test the joint hypotheses using the homoskedasticity-only F-statistics. For each of the cases below specify a restricted model and indicate how you would compute the F-statistic to test for the validity of the restrictions.
(a)?₁ = -?₂; ?₃ = 0
(b)?₁ + ?₂ + ?₃ = 1
(c)?₁ = ?₂; ?₃ = 0

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