IB skill practice

Interpret confidence interval decisions

Use a confidence interval to decide whether a hypothesised value is plausible.

Paper 1, Paper 2 5 marks Difficulty 5

Interpret confidence interval decisions - graph-supported reasoning

A school survey confidence interval is \([27,35]\). A proposed value is \(28\). Enter 1 if the proposed value is inside the interval, otherwise enter 0. Enter the requested value and choose the interpretation that matches the result.

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