Question: Take the NPIV approximating equation (20.35) and error eK . (a) Does it satisfy E[eK j Z] 0? (b) If L K can
Take the NPIV approximating equation (20.35) and error eK .
(a) Does it satisfy E[eK j Z] Æ 0?
(b) If L Æ K can you define ¯K so that E[ZK eK ] Æ 0?
(c) If L È K does E[ZK eK ] Æ 0?
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