Prove that n Σ Σα = Cį = 0 i=1 72 Ci Xi = 1 i=1 With the same way show that E(Bo) = B. And Var(B.) =? o y = βα + βια c

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Prove that n Σ Σα = Cį = 0 i=1 72 Ci Xi = 1 i=1 With the same way show that E(Bo) = B. And Var(B.) =? o

y = βα + βια c, = (x, - X)/5 είβ.) - (Σ) -Σε -Σεβ. + βιε) - Α.Σ + Α.Σ CX =1 Var(ſe) = Var(y - B2x) = Vary) + Var(β.) - 2xCory.β) Prove that C. Ο 6, Σ. 21 with the same way show that Ε(β) = βο And Var(.) =? Η