A political researcher expects that higher income leads to higher political trust. At the same time, the researcher expects that part of the relationship between income and political trust might be due to the effects of education on both income and political trust. Which of the following would be the hypothesis in this situation?
A. There is a negative relationship between income and political trust.
B. There is a positive relationship between income and political trust while controlling for education.
C. There is no relationship between income and political trust while controlling for education.
D. There is a negative relationship between income and political trust while controlling for education.
B.
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Which group of laborers were recruited and employed by the railroad companies to lay thousands of miles of track over the West's rugged terrain?
A. Hispanics/Latinos B. Chinese C. ethnic Americans from the Midwest and East D. Africans
According to Copeland, what determines the expected value of war?
a. the power balance or imbalance between the relevant states b. the amount of trade between the relevant states c. the degree of interdependence between the relevant states d. the degree of autarky of the relevant states