Answer the following statement(s) true (T) or false (F)

1. To determine the probability of being in the tail, you add the probability of being in half of the normal curve to the probability of being between the mean and a given z-score.
2. The range for a two-tailed probability is always symmetrical.
3. Probabilities can be used to calculate z-scores.
4. The normal curve only has one mode.
5. To calculate two-tailed probabilities, each tail is calculated independently then added together.


1. false
2. false
3. true
4. true
5. true

Political Science

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Which of the following statements best explains newspaper ownership throughout the 1930s?

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The post-Cold War era is __________.

A. less complex and more predictable than the Cold War period B. less peaceful than the Cold War period C. characterized by a less global international economy D. characterized by transnational concerns such as environmental degradation and disease

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Which of the following is the more serious source of error in surveys?

A. Respondents who lie to interviewers just for the sake of lying. B. Respondents who lie to interviewers in order to protect their own images.

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The American political leaders or elites and the mass public tend to differ sharply in their

a. support for providing economic aid to other nations. b. support for the use of U.S. military force abroad. c. views on trade and immigration. d. Both options A and B are true. e. All of the above are true.

Political Science