2. (Chapter 2, p.82) In computing Var(yoyo), where yo = Bo Bico and yo = Bo + Bixo + €0, we used Cov(Bo, yo) = 0. (a) Express Bo as a linear combination of y₁,..., n. (b) Using the expression of Bo in (a), show that Cov(Bo, yo) = 0.

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Please answerf both a and b, thanks

2. (Chapter 2, p.82) In computing Var(ĝo – yo), where yo Bo + B₁o and yo
Cov (Bo, yo) = 0.
=
(a) Express Bo as a linear combination of y₁,..., Yn.
(b) Using the expression of Bo in (a), show that Cov(Bo, yo) = 0.
=
= Bo + B₁x0+ €0, we used
Transcribed Image Text:2. (Chapter 2, p.82) In computing Var(ĝo – yo), where yo Bo + B₁o and yo Cov (Bo, yo) = 0. = (a) Express Bo as a linear combination of y₁,..., Yn. (b) Using the expression of Bo in (a), show that Cov(Bo, yo) = 0. = = Bo + B₁x0+ €0, we used
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