In 1890, approximately what percentage of paid workers were women?
A. 40%
B. 10%
C. 20%
D. 30%
Ans: C. 20%
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In the Tuskegee Syphilis Study, researchers failed to give proper consideration to
A. data analysis. B. research ethics. C. practical matters. D. research design.
Random assignment is intended to achieve ______ by placing subjects in different treatment and control groups to “level the playing field.”
a. equivalence b. variance c. confirmation d. agreement
Scales are sample dependent, indexes are not
a. True b. False Indicate whether the statement is true or false
Which one of the following statements best describes the financial rewards of education?
a. As education increases, the difference between male and female median weekly earnings decreases. b. Incomes rise as the level of education increases. c. There is no evidence that more education increases salaries. d. The highest paid workers in the United States have some college.