Which of the following is an example of correlational research?
a. A historian conducts an extensive study of the factors that led to the American defeat at Pearl Harbor in 1941.
b. A researcher tracks smokers and nonsmokers to see how many of them get lung cancer and if there are significant differences in lung cancer rates between the two groups.
c. A researcher interviews taxpayers to find out how strongly they would support a proposal for a "flat" tax.
d. A researcher randomly divides her participants into two groups, giving one group a powerful new medicine while the other group gets a placebo.
Answer: b
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A) echocardiography B) Holter monitor C) electrocardiogram D) stress testing
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Indicate whether the statement is true or false
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A) ?sympathetic B) ?parasympathetic C) ?peripheral D) ?motor E) ?sensory