QUESTIONS 11-15. Data in the table below were collected in a 10-year prospective cohort study of asbestos exposure and mesothelioma (a type of lung cancer) among 11,000 elderly adults in the United States. Answer questions 11-15 based on these data. Status Exposed to Asbestos Not Exposed to Asbestos Mesothelioma 20 No Mesothelioma 980 9998 12. What is the incidence of mesothelioma among those not exposed to mesothelioma? 0.0004 O 0.0005 O 0.0002 O 0.0003

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A: status Exposed noExposed meso 20  2 no meso 980 9998

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