For a constant matrix a and a random vector z eazaez var


For a constant matrix A and a Random vector z, E(Az)=AE(z), var (Az)=A var(z) AT under the Gauss-Markov conditions, determine the mean vector and the variance-co-variance matrix for the vector y-bar?( in terms of X, β, σ2)

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Basic Statistics: For a constant matrix a and a random vector z eazaez var
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