(i) Find the marginal probability distributions for the random variables X1 and X2 with joint pdf
f(x1, x2) = 12x1x2(1-x2) , 0 < x1 <1 0 < x2 < 1 0 , otherwise
(ii) Calculate E(X1) and E(X2)
(iii) Are the variables X1 ¬and X2 stochastically independent?
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