In a study of the relationship between birthweight and race, birth records of babies born in Illinois were examined. The researchers found that the percentage of low birthweight babies among babies born to U.S.-born white women was much lower than the percentage of low birthweight babies among babies born to U.S.-born black women. This suggests that race plays an important role in determining the chance that a baby will have a low birthweight. However, the percentage of low birthweight babies among babies born to African-born black women was roughly equal to the percentage among babies born to U.S.-born white women. Use the language of statistics to discuss what these data say about the relationships between low birthweight, race, and mother's birthplace. Use a schematic diagram similar to Figure 7.4.1 to support your explanation.
Figure 7.4.1

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Table 7.4.1 Weight (mg) Males Females 0.94 0.30 153 0.28 Mean SD