2. Consider the linear regression models Full Model : Y = X+e; Y = e, Null...
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2. Consider the linear regression models Full Model : Y = X+e; Y = e, Null Model: where XRxp is of full column rank. Assume that condition (N) holds. Let A = RPP be the identity matrix. Prove that (RSS null - RSS full)/(dfnu - df full) (A){A(XTX)A}A/p - 82 RSS full/df full where and are least squares estimators derived from the full model. 2. Consider the linear regression models Full Model : Y = X+e; Y = e, Null Model: where XRxp is of full column rank. Assume that condition (N) holds. Let A = RPP be the identity matrix. Prove that (RSS null - RSS full)/(dfnu - df full) (A){A(XTX)A}A/p - 82 RSS full/df full where and are least squares estimators derived from the full model.
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