QCEVault

Interval estimates for proportions — Question 85

Original QCE Vault practice · 3 marks

Q85 · Practice questionTechnology-activeSimple familiar3 marks

QUESTION 85 (3 marks)

In a random sample of 250250 people, 6868 answer yes. Using z=1.645z=1.645, construct an approximate 90% confidence interval for the population proportion.
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