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We have a dataset containing information on earnings of male and female top executives. Consider a binary variable Male which takes value 1 if the person is male, and value 0 if the person is female. A single regression model yields: In(Earnings) = 6.48 + 0.44Male (0.01) (0.05) Now add a new variable, the market value of the firm, and run a multiple regression model. It yields: In(Earnings) = 3.86 + 0.28Male + 0.37MarketValue (0.03) (0.04) (0.004) Based on the fact that the coefficient on Male is much smaller in the multiple regression model than in the single regression model, what is the sign of the correlation between Male and MarketValue? Negative Positive Uncertain