Neco Model Questions Vol1 2022 Civic Education Question 18
Practice objective / multiple choice question 18 from the 2022 Neco Model Questions Vol1 Civic Education examination.
In a secondary school of 800 students, the probability that a student joins a cult is modelled by \(p = 0.02 + 0.03P + 0.04E + 0.05L\), where \(P\), \(E\) and \(L\) are binary variables (1 if the student is affected by peer pressure, economic hardship, or lack of extracurricular activities respectively, 0 otherwise). Initially, 30 % of students experience peer pressure, 25 % experience economic hardship, and 20 % lack extracurricular activities; the three factors are independent. A new programme reduces the prevalence of each risk factor by half while keeping independence. What is the reduction in the expected number of students who join cults after the programme (expressed to one decimal place)?
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This is Neco Model Questions Vol1 2022 Civic Education Question 18. It is one of the objective questions from the 2022 Neco Model Questions Vol1 Civic Education examination.
Difficulty level: Hard .
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