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Using the data in Question 3, provide the estimated regression equation for estimating (predicting) the average Birth Weight with the following predictors in the model:

Using the data in Question 3, provide the estimated regression equation for estimating (predicting) the average Birth Weight with the following predictors in the model: Mother's Race, Smoking, Gestational Age, Attitude, and Gestational Age by Mother's Race interaction term. Interpret the estimated interaction effect.

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