(Answered) Question - two random variables refer to the previous

Statistics

Question - Two random variables. Refer to the previous exercise. Suppose that the random variable Y has mean 20 and variance 36.

(a) Find the mean and standard deviation of 2X + Y, assuming that the correlation between X and Y is 0.

(b) Repeat part (b), assuming that the correlation between X and Y is 0.5.

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