Question: Let X1 and X2 be a random sample of size n = 2 from a distribution with pdf f(x) = 6x(1 x), 0 <

Let X1 and X2 be a random sample of size n = 2 from a distribution with pdf f(x) = 6x(1 − x), 0 < x < 1. Find the mean and the variance of Y = X1 + X2.

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