Suppose W = (aX + 3Y) 2 where Y, X are two random variables with zero mean and variances 20x = 4, oy2 = 16. The correlation coefficient between them is p = -0.5 a) Find the value of a that make W...

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Extracted text: Suppose W = (aX + 3Y) 2 where Y, X are two random variables with zero mean and variances 20x = 4, oy2 = 16. The correlation coefficient between them is p = -0.5 a) Find the value of a that make W minimum value. b) Find minimum mean value of W.