QCEVault

Interval estimates for proportions — Question 198

Original QCE Vault practice · 3 marks

Q198 · Practice questionTechnology-activeSimple familiar3 marks

QUESTION 198 (3 marks)

A seed trial randomly selects 320320 seeds from a large batch, and 208208 germinate. Using z=1.645z=1.645, construct an approximate 90% confidence interval for the germination proportion of the batch.
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