Question: Refer to Exercise 18. The regression equation is y = 9.9198 - 0.00039x, the sample size is 9, and the standard error of the slope

Refer to Exercise 18. The regression equation is yˆ = 9.9198 - 0.00039x, the sample size is 9, and the standard error of the slope is 0.0032. Use the .05 significance level. Can we conclude that the slope of the regression line is less than zero?

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