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3. Suppose the covariance between Y and X is 15, the variance of Y is 25, and the variance of X is 36. What is

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3. Suppose the covariance between Y and X is 15, the variance of Y is 25, and the variance of X is 36. What is the correlation coefficient (r), between Y and X? 4. Compare and contrast covariance between Y and X is 10 and covariance between P and Q is 1,210

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