Gce Model Questions Vol1 2025 Civic Education Question 14

A longitudinal study followed two groups of adolescents over five years. Group N consisted of \(2\,000\) adolescents who had never used drugs; \(5\%\) of them became dependent on a drug within five years. Group E consisted of \(800\) adolescents who had experimented with a drug (used it once); \(20\%\) of them became dependent within five years. A new prevention programme is introduced that (i) reduces the number of adolescents who experiment with drugs by \(30\%\) and (ii) reduces the dependency rate among experimental users by \(15\%\) relative to the original rate. Assuming the programme does not affect the never‑users, what is the expected reduction in the total number of dependent adolescents after five years as a result of the programme? Give your answer to one decimal place.