Answer the following statement(s) true (T) or false (F)
1. Nonnormality is sometimes overcome through variable transformation.
2. When problems of nonnormality cannot be resolved adequately, analysts should consider nonparametric alternatives to the t-test.
3. Analysts should always examine the robustness of their findings.
4. All t-tests first test for equality of means and then test for equality of variances.
5. The paired samples t-test tests the null hypothesis that the mean difference between the before and after test scores is zero.
1.true
2.true
3.true
4.false
5.true
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Which medium has a prominent role in providing a lively forum for conversations about politics?
A.) newspapers B.) cell phones C.) the Internet D.) land line telephones
Which statement best depicts the conclusions from the chapter on the role of government in economic situations?
A) The answer depends on the nation in question and the particular circumstances. B) Government intervention limits economic growth in most circumstances. C) Markets usually do not always regulate themselves. D) State intervention in economic matters is never necessary.
The National Environmental Policy Act of 1969 requires
A) private companies to issue environmental impact statements on an annual basis. B) nonprofit entities to monitor their environmental actions. C) the EPA to examine international trends in pollution prevention. D) agencies to issue an environmental impact statement when undertaking any major action that may affect the environment. E) states to implement cap and trade networks.
Rational actors in noncooperative games:
a. Do what they think is best in the collective interest, even if doing so is expected to harm them relative to some other action they could have taken b. Do what they think is best in the other player’s interest, even if doing so harms them c. Do what they think is best in their own interest and realize that other players act the same way d. Do what they think is best in their interest knowing that other players prefer the collective good