Question: 5. Under the current assumptions (which mean we have random samples), the least squares estimator of the para meter 6 is the difference between the

5. Under the current assumptions (which mean we have random samples), the least squares estimator of the para meter 6 is the difference between the groups' sample means, 6 = Yadult Eouth . This estimator will be an unbiased estimator of the unknown difference parameter 6. Show why this is the case, ie. demonstrate that E[6] = 6

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