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Consider the sample correlation r between two continuous random variables X and Y. Suppose r = 0. Which of the following statements is true? A.

Consider the sample correlation r between two continuous random variables X and Y. Suppose r = 0. Which of the following statements is true?

A. the correlation between X and Y in the population is zero ( = 0)

B. the covariance between X and Y is zero

C. the mean of X is equal to the mean of Y

D. the standard deviations of X and Y have opposite signs

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