Using a proxy variable can be appropriate in all of the following settings except estimating a:
A. regression where the outcome is measured with error.
B. multiple linear regression.
C. regression with both treatment and control variables.
D. regression where the proxy is uncorrelated with confounding factor causing the endogeneity problem.
Answer: D
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Answer the following statement true (T) or false (F)
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What will be an ideal response?