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9. The environmental and reproductive health departments at UCSF studies the interaction of pregnancies outcomes and chemical exposures. One study that was just funded looks

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9. The environmental and reproductive health departments at UCSF studies the interaction of pregnancies outcomes and chemical exposures. One study that was just funded looks at preterm birth weight and exposure to perfluorooctanoic acid (PFAS), a common chemical added to non-stick cookware. The study has 1,000 participants, 495 that had a low preterm birth weight (under 5 lbs) and 505 that had high preterm birth weights (>5 lbs) In terms of exposure, 950 of them were exposed to PF AS daily during their pregnancy and 50 were not. What are the independent and dependent variables in this sample? a. dependent = pregnancy, independent = PFAS exposure b. dependent = preterm birth weight, independent = PFAS exposure c. dependent = PFAS exposure, independent = preterm birth weight d. dependent = pregnancy, independent = preterm birth weight e. dependent = PFAS exposure, independent = pregnancy 10. In a simple graph of the linear regression model, unexplained variation can be calculated

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