Most people who work for someone else are likely to have a set number of hours that does not vary. In most cases this will be around 40 hours per week. Self-employed people do not have the luxury of having a limit on the hours they work. As a result we would expect that the hours worked by the self-employed vary more than do the hours of employees (WRKSLF: 1 = self-employed, 2 = work for someone else). Is there sufficient evidence to support this theory (HRS1)? Conduct tests at the 5% significance level.