(4) Let X be a discrete random variable with domain D. Prove that Var(X) = E(X?) – E(X).

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Q: 10. If E X=5' ,r=1,2,3,.., find M(t), the moment generating function of X, and the p.d.f. of X.

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Q: Sa + bx² The density function of X is given by f (x) l0, 0<x<1 otherwise If E[X] = ², find a and b.

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Q: 81 100 88 85 84 100 91 98 80 Test B 93 73 83 98 77 85 85 84 90 (a) Is there significant difference…

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Q: (a) Consider a t distribution with 24 degrees of freedom. Compute P(-1.00<t<1.00). Round your answer…

A: The degrees of freedom is 24.