Use two-proportion z statistics - exam scenario
Confirm the modelling meaning first. A library network compares two sample proportions: \(\hat p_1=0.6\), \(n_1=136\), \(\hat p_2=0.48\), \(n_2=122\). Using the pooled proportion, calculate the z statistic. Enter the requested value and choose the interpretation that matches the result.
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Worked practice: result and interpretation
Calculate the requested result first, then choose the interpretation that follows from it.