Waec Model Questions Vol1 2021 Civic Education Question 14
Practice objective / multiple choice question 14 from the 2021 Waec Model Questions Vol1 Civic Education examination.
A rapid screening test for drug abuse among secondary‑school students has a sensitivity of 85 % and a specificity of 90 %. In this population the prevalence of drug abuse is 10 %. If a student tests positive, what is the probability that the student actually abuses drugs? Express your answer as a decimal rounded to three places.
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About This Question
This is Waec Model Questions Vol1 2021 Civic Education Question 14. It is one of the objective questions from the 2021 Waec Model Questions Vol1 Civic Education examination.
Difficulty level: Hard .
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