A nurse is interested in studying the effects of employment status (i.e., employed, unemployed) and educational level (i.e., high school, college, graduate school) of caregivers on their ability to care for their partner with a stroke. They find that there is a main effect for employment status but that education does not have an effect on caregiving, and that the effect of employment status does not depend on education. Assume that a difference of 2 or greater between group means is significant and there there are an equal number of subjects in each group. Which set of results would correspond to such a finding? Group means are reported in tables.