Gce Model Questions Vol1 2018 Agricultural Science Question 48
Practice objective / multiple choice question 48 from the 2018 Gce Model Questions Vol1 Agricultural Science examination.
An extension service wishes to estimate the proportion of farmers in a district who have adopted a new pest‑control method. From previous surveys the expected adoption proportion is about 0.40. The service wants a margin of error of \(\pm5\%\) at the 95\% confidence level.\n\n(a) Calculate the minimum sample size required.\n\nAfter surveying 150 farmers, 66 are found to have adopted the method.\n\n(b) Compute the observed adoption proportion and the 95\% confidence interval for the true proportion.\n\n(c) State whether the achieved margin of error meets the original target.
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This is Gce Model Questions Vol1 2018 Agricultural Science Question 48. It is one of the objective questions from the 2018 Gce Model Questions Vol1 Agricultural Science examination.
Difficulty level: Hard .
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