Answer the following statement(s) true (T) or false (F)
1. A normal distribution (Appendix A) is an example of a probability distribution.
2. The standard deviation of a probability distribution is also called a standard error.
3. The formula for calculating a confidence interval for samples larger than 30 is .
4. When the sample size is smaller than 30, the normal distribution is replaced by the t distribution for calculating confidence interval.
5. Confidence intervals are also calculated for proportions (e.g., polling data).
1.true
2.true
3.true
4.true
5.true
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The 2008 presidential election featured a record level of voter turnout among people aged thirty and below.
Answer the following statement true (T) or false (F)
Which of the following would not be considered an economic interest group?
A) animal rights group B) labor union C) business and industry association D) professional employee association E) business group
The effect of racial and ethnic gerrymandering is the creation of ______ districts.
a. partisan b. majority-minority c. homogeneous d. minority-majority
For the most part, the majority of Americans believe that Democrats are better than Republicans at handling
A. health care. B. crime. C. national defense. D. foreign trade. E. the economy.