QCEVault

Interval estimates for proportions — Question 45

Original QCE Vault practice · 4 marks

Q45 · Practice questionTechnology-activeComplex unfamiliar4 marks

QUESTION 45 (4 marks)

A pilot study estimates a population proportion as 0.370.37. Determine the minimum sample size required so that an approximate 95% confidence interval has margin of error at most 0.030.03, using the pilot estimate in the calculation.
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