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all of question 1 1. Let X1, X2, X3 be three independent random variables with binomial distributions Bin(4, 1/2); Bin(6, 1/3), Bin(12, 1/5), respectively. Find

all of question 1

1. Let X1, X2, X3 be three independent random variables with binomial distributions Bin(4, 1/2); Bin(6, 1/3), Bin(12, 1/5), respectively. Find 1.1. P(X1 - 2, X2 = 2, X3 = 5). 1.2. E[X1X2X3]. 1.3. The mean and the variance of X1 + X2 + X3

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