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10.2 For the sample in problem 10.1, consider another estimator of u (call it ê) that is defined as follows:
( 10.1 Suppose that we have a simple random sample of size 3 from a population with mean w. Our estimator of u is ê, defined


194 SOPHISTICATED STATISTICAL INFERENCE Is û an unbiased estimator of u? If not, what is its bias? Fully justify your answer.
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Note: E(A+B+C+ ...)=E(A) +E(B) +ECC) +.... 101) E(@) (EX, +4x2+2x) = { (x+1, 5(x2)+<E<s) LE(az) marley - {e + 1 2 + 2 / 3u [

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