Twee ewekansige steekproewe word uit ʼn groot ouditeursfirma geneem. Die een groep is gevra “Hoeveel ure het jy Dinsdagaand geslaap?” Die tweede groep is gevra “Hoeveel ure het jy Saterdagaand geslaap?”. Gebruik ʼn betekenispeil van 5% en toets vir gelyke variansies. Aanvaar dat die populasies normaal verdeel is en onafhanklik is. Die volgende tabel verskaf ʼn opsomming: / Two random samples were taken from a large auditing firm. The one group of auditors were asked “How many hours did you sleep on Tuesday night?” The second group were asked “How many hours did you sleep on Saturday night?”. Use a 5% level of significance and test for equal variances. Assume that the populations are normal and independent. The following table provides a summary:

Die toetsstatistiek vir die hipotese toets is / The test statistic for the hypothesis test is