Neco 2018 Agricultural Science Question 44
Practice objective / multiple choice question 44 from the 2018 Neco Agricultural Science examination.
A herd of \(150\) goats is at risk of a contagious disease. To prevent an outbreak, at least \(80\%\) of the herd must be immune. A vaccine available has an efficacy of \(90\%\), meaning each vaccinated goat becomes immune with probability 0.9. Assuming the vaccine is administered to a selected number of goats and that immunity is achieved exactly according to the efficacy, what is the minimum number of goats that must be vaccinated to meet the herd‑immunity requirement? Round up to the next whole goat.
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About This Question
This is Neco 2018 Agricultural Science Question 44. It is one of the objective questions from the 2018 Neco Agricultural Science examination.
Difficulty level: Medium .
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