Use the Birthweight_Smoking data set introduced in Empirical
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Use the Birthweight_Smoking data set introduced in Empirical Exercise E5.3 to answer the following questions. a. Regress
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Use the Birthweight_Smoking data set introduced in Empirical Exercise E5.3 to answer the following questions. a. Regress Birthweight on Smoker. What is the estimated effect of smoking on birth weight? b. Regress Birthweight on Smoker, Alcohol, and Nprevist. i. Using the two conditions in Key Concept 6.1, explain why the exclusion of Alcohol and Nprevist could lead to omitted variable bias in the regression estimated in (a). ii. Is the estimated effect of smoking on birth weight substantially different from the regression that excludes Alcohol and Nprevist? Does the regression in (a) seem to suffer from omitted variable bias? iii. Jane smoked during her pregnancy, did not drink alcohol, and had 8 prenatal care visits. Use the regression to predict the birth weight of Jane
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