Neco 2024 Civic Education Question 27
Practice objective / multiple choice question 27 from the 2024 Neco Civic Education examination.
A survey of 2\,000 secondary‑school students found that 12\% had tried cigarettes, 8\% had tried marijuana, and 5\% had tried both substances. The school introduces an anti‑drug programme that reduces the probability of trying cigarettes by 30\% (relative) and the probability of trying marijuana by 25\% (relative). Assume the programme reduces the joint probability of trying both substances by the product of the individual reductions. After the programme, how many students are expected to have tried at least one of the two substances? Round your answer to the nearest whole number.
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About This Question
This is Neco 2024 Civic Education Question 27. It is one of the objective questions from the 2024 Neco Civic Education examination.
Difficulty level: Hard .
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