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Interval estimates for proportions — Question 149

Original QCE Vault practice · 4 marks

Q149 · Practice questionTechnology-activeComplex familiar4 marks

QUESTION 149 (4 marks)

A study uses p^=0.40\hat p=0.40 when planning a 90% confidence interval for a population proportion. Using z=1.645z=1.645, determine the minimum sample size required for a margin of error no greater than 0.0350.035.
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