Feminist organizations often use the issue of who does the housework in two-career families as a gauge of equality. Suppose that a study was undertaken and a random sample of 125 two-career families was taken. The wives were asked to report the number of hours of housework they performed the previous week. The results, together with the responses from a survey performed last year (with a different sample of two-career families), were recorded. Can we conclude that women are doing less housework today than last year?