(Solved): please be clear and do not copy from other post Suppose an estimator ^n of satisfies E(^n ...
please be clear and do not copy from other post
Suppose an estimator θ^n of θ satisfies E(θ^n)=θ+na1+n2a2+o(n−2). Consider a new estimator θ~n=nθ^−(n−1)θ^(.). where θ^(.)=n1∑i=1nθ^(−i) and each θ^(−i) is obtained by leaving out the i th observation from the data and following the same formula as that for θ^. Show that E(θ~n)−θ=o(n−1).