Methods2026 NHT Exam 2 Section A · Q1CAS active1 mark

Confidence interval for a population proportion

In a random sample of 300 builders, 230 had completed an apprenticeship in the last 10 years.

Using this sample, an approximate 95% confidence interval for the population proportion of builders who have completed an apprenticeship in the last 10 years, correct to three decimal places, is

1 mark

(0.727, 0.807)

(0.719, 0.815)

(0.712, 0.821)

(0.704, 0.830)

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