Question: 5. Suppose we have a simple random sample of size 3 from a population with mean a. Our estimator of a is [1, dened as

5. Suppose we have a simple random sample of size 3 from a population with mean a. Our estimator of a is [1, dened as follows. {it : 2X1 +3X2 +4X3 Is '11 an unbiased estimator of p? If is an unbiased estimator, provide proof, which means you show Em) : p: (if that is true). If [i is not an unbiased estimator, what is the bias

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