Question: Random variables. Given independent random variables with means and standard deviations as shown, find the mean and standard deviation of: a) 2Y + 20 b)

Random variables. Given independent random variables with means and standard deviations as shown, find the mean and standard deviation of: a) 2Y + 20 b) 3X Mean SD c) 0.25X + Y

a) 2Y + 20 b) 3X Mean SD c) 0.25X + Y d) X-5Y X 80 12 e) X + X2 + X3 Y 12 3

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