mean m = E(X), variance o = var(X), and standard deviation o = 0x of each distribution: %3D 2 3 11 1 3 4. 5 D 1/3 1/2 1/6 (b) f(x) 0.4 0.1 0.2 0.3 the formulas, H = E(X) = x, f (x1) + x2f (x2) + ... + Xmf (Xm) = Ex,f(x) E(X³) = x f(x) + x3f(x2)+ ...+ x(Xm) = fx) %3D a use the formulas = var (X) = E(X?)-u² and o= ox = var( X). %3D

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