Suppose the original model in this question given by , satisfies MLR 1-5. It is known, in the data, exper and tenure are positively correlated. Suppose you add a regressor SSN (social security number of the worker), and run the regression . (a) In this case, which assumption is the most likely to be violated? None of the assumptions (b) Can the OLS estimator be unbiased? unbiased (c) The variance of the OLS estimator is likely to be larger .多重下拉选择题