Why can't correlational research tell us why two variables go together?
a. Because it is conducted in laboratories instead of the real world
b. Because it is not scientifically rigorous
c. Because it is too experimental
d. Because of the third-variable problem
D
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Barack Obama's success in politics is due in part to having a beneficial relationship with his wife.
a. true b. false
Which of the following is TRUE concerning high school alcohol and drug use?
A) Hispanic students are much more likely to use marijuana than are Non-Hispanic white or African American students. B) African American students are much more likely to use marijuana than are Non-Hispanic white or Hispanic students. C) There is little difference in frequency of marijuana use among Non-Hispanic white, African American, and Hispanic students. D) Non-Hispanic white students are much more likely to use marijuana than are African American or Hispanic students.