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(b) (7 points) Derive , the variance of U, in terms of b, and the covariance 2 σU 2, 2 σX σY σXY 2 σU = EU 2 − E(U)2 = EU2 because the second term is zero = E(Y − µ Y) 2 − 2b(X−µ x)(Y − µ Y) b 2(X−µ x) 2 = E(Y − µ Y) 2 − 2bE(X−µ x)(Y − µ Y) b 2E(X−µ x) 2 = 2 − 2b σY σXY b 2 2 σX (c) (6 points) Suppose I want to choose b in order toWeebly's free website builder makes it easy to create a website, blog, or online store Find customizable templates, domains, and easytouse tools for any type of business websiteProvided to by Universal Music GroupYMCA Village PeopleThe Best Of Village People℗ An Island Records Release; Char Function In Power Apps Power Apps Microsoft Docs ƒƒ"ƒY "¯Œ^ ŠÛŠç 30'ã