Question: Random variables fini Given independent random variables X and Y, with means and standard deviations as shown, find the mean and standard deviation of each

Random variables fini Given independent random variables X and Y, with means and standard deviations as shown, find the mean and standard deviation of each of the variables below. X1 , X2 , and X3 are independent variables with the same distribution as X.

a) 2Y + 20

b) 3X

c) 0.25X + Y

d) X − 5Y

e) X1 + X2 + X3 Mean SD X 80 12 Y 12 3

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