Waec Model Questions Vol1 2017 Biology Question 7
Practice objective / multiple choice question 7 from the 2017 Waec Model Questions Vol1 Biology examination.
In a community of 5,000 individuals, 200 are smokers and 4,800 are non‑smokers. Among smokers, 30 develop lung disease, while among non‑smokers, 20 develop the same disease. Calculate the relative risk of lung disease for smokers compared with non‑smokers and state what the value indicates about the association.
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About This Question
This is Waec Model Questions Vol1 2017 Biology Question 7. It is a objective / multiple choice question from the 2017 Waec Model Questions Vol1 Biology examination.
Difficulty level: Hard .
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