ʼn Groot versekeringsmaatskappy het steekproewe geselekteer van enkellopende en getroude manlike polishouers, en die aantal wat in die laaste jaar ʼn versekeringseis ingedien het, is aangeteken in die onderstaande tabel: / A large insurance company selected samples of single and married male policyholders and recorded the number who made an insurance claim over the past year in the table below:

Konstrueer ʼn 95% vertrouensinterval vir die verskil tussen die proporsies vir die twee populasies. / Construct a 95% confidence interval for the difference between the proportions for the two populations.