If X and Y are random variables with variances o = 3 and σ = 9, X and Y are not independent, and oxy = 1, then find the variance of the random variable Z = -9X+8Y - 7.

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Q: The heights of 1500 students are normally distributed with a mean of 176.5 centimeters and a…

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Q: 38) A and B are events such that P(AB) = ½½, P(B) = ½, and P(A) = P(B) = p. Then what is P

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Q: Suppose the joint PMF of random variables X and Y is P(X = x, Y = y) =   …

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Q: A manufactured lot of buggy whips has 15 items, of which 5 are defective. A random sample of 3 items…

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