Consider estimation of the following two-equation model:y 1 = 1 + 1 ,y 2 =
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Consider estimation of the following two-equation model:y1= β1+ ε1,y2= β2x + ε2.
A sample of 50 observations produces the following moment matrix:
a. Write the explicit formula for the GLS estimator of [β1, β2]. What is the asymptotic covariance matrix of the estimator?
b. Derive the OLS estimator and its sampling variance in this model.
c. Obtain the OLS estimates of β1 and β2, and estimate the sampling covariance matrix of the two estimates. Use n instead of (n ?? 1) as the divisor to compute the estimates of the disturbance variances.
d. Compute the FGLS estimates of β1 and β2 and the estimated sampling covariance matrix.
e. Test the hypothesis that β2 = 1.
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1 yi y2 x 1 50 150 500 yi 2 50 |100 40 90 60 50 100
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The model is The generalized least squares estimator is where s xx xxn s x 1 xy 1 n s x 2 xy 2 n and ...View the full answer
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