Waec Model Questions Vol1 2025 Agricultural Science Question 21
Practice objective / multiple choice question 21 from the 2025 Waec Model Questions Vol1 Agricultural Science examination.
A herd of 200 cattle is at risk of anthrax. The probability of infection per animal without vaccination is 0.04. A vaccine reduces the infection probability by 85% and costs ₦150 per animal. The farmer can spend at most ₦30,000 on vaccination. What is the minimum number of cattle that must be vaccinated so that the expected number of infected animals in the herd does not exceed 3?
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About This Question
This is Waec Model Questions Vol1 2025 Agricultural Science Question 21. It is one of the objective questions from the 2025 Waec Model Questions Vol1 Agricultural Science examination.
Difficulty level: Medium .
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