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f the population variance of X is 100, the population variance of Y is 49, and the correlation between X and Y is -.35, then

f the population variance of X is 100, the population variance of Y is 49, and the correlation between X and Y is -.35, then

The population covariance between X and Y is 24.5.
The population covariance between X and Y is 1,715.
The population covariance between X and Y is -1,715.
The population covariance between X and Y is -24.5.

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