IB skill practice

Interpret confidence intervals for proportions

Connect a proportion confidence interval to a contextual claim.

Paper 1, Paper 2 5 marks Difficulty 4

Interpret confidence intervals for proportions - exam scenario

A regional bank estimates a proportion with confidence interval [0.43, 0.55]. State 1 if claim \(p=0.50\) is plausible from the interval, otherwise state 0. Enter the requested value and choose the interpretation that matches the result.

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