A correlation of .20 is found between education and income in a representative sample of residents in city X. However, the correlation is not statistically significant. On the basis of this outcome alone, which of the following conclusions is most warranted? Increased education generally results in no increase in income in most cities People with more education generally tend to earn more income in city X, but we do not know which is the cause and which is the effect. In city X, most of the people with advanced degrees are wealthy In city X, the relationship between education and income is probably curvilinear No significant relation between education and income was established