Ononot — In a multiple linear regression Y = X\beta + \epsilon, if th

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Inferential Statisticshard

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In a multiple linear regression $Y = X\beta + \epsilon$ , if the variance-covariance matrix of the errors is $Cov(\epsilon) = \sigma^2 \Omega$ where $\Omega \neq I$ , what is the Best Linear Unbiased Estimator (BLUE)?