IB skill practice

Use one-proportion z tests

Calculate a one-proportion z statistic and interpret its sign.

Paper 1, Paper 2 5 marks Difficulty 4

Use one-proportion z tests - exam scenario

A sports institute one-proportion test has \(\hat p=0.53\), \(p_0=0.50\), and \(n=125\). Calculate the z statistic. Enter the requested value and choose the interpretation that matches the result.

Worked practice: result and interpretation

Calculate the requested result first, then choose the interpretation that follows from it.