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Suppose you have assumed the following data-generating process: Y i = ? + ? 1 X 1i + ? 2 X 2i + ? 3
Suppose you have assumed the following data-generating process:
Yi = ? + ?1X1i + ?2X2i + ?3X3i + Ui
Suppose also that you believe X2 is endogenous in this model. Which of the following variables would be valid instruments for X2?
(Multiple Choice; can be multiple options)
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