Exercise 24 Suppose 4+4 € Sn such that HX E { 1 n} except 4(+) = 4(+) 4(x)=4(+) when x=i and when and when x=j (So 4 (i) = 4 (j) and Pris = Y cjs + (mic Show sign (4) = = sign (4) 1000

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Q: Show that Var (Y) = Var(ε₁) = 0².

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Q: Compute the following. (a) Pa 4-

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