RESEARCH METHODOLOGY

The manager of a sporting goods store offered a bonus commission to his salespeople when they sold moregoods. A new manager dropped the bonus system. For a random sample of six sales people, the weeklysales (in thousands of dollars) are shown in the following table with and without the bonus systemSalesperson 1 2 3 4 5 6with bonus 2.9 3.0 5.8 4.4 5.3 5.6w/o bonus 2.8 2.5 5.9 3.5 4.6 4.6difference 0.1 0.5-0.1 0.9 0.7 1.0