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(ii) Another ratio-type estimator of R = wis i = A Show that is again a bias estimator of R. In particular, show that E(F) -
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I Given that 시 I To show: R - E(F) = fricai- use) Nito 121 R.H.S. where En (xi - und Nume i riayi i Rihas. als Nun y; xi [xi-Ru4.6. I y lle - Eys Nulx Mx = ECO) - R 3 lihas. Hence E(ñ) - R ad Nelke & ri (4x xi)

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