1. Same-sex marriage: In a recent ABC News/Washington Post poll, 1231 adults nationwide answered the question, "Overall, do you support or oppose allowing gays and lesbians to marry legally?"

Of the respondents, 487 support same-sex marriage. What is the 95% confidence interval for the proportion of all American adults who support same-sex marriage?

http://www.washingtonpost.com/page/2010-2019/WashingtonPost/2015/04/23/National-Politics/Polling/release_395.xml

1. (0.368, 0.423)
2. (0.382, 0.41)
3. (0.373, 0.419)
4. (0.36, 0.432)

2. The ability to find a job after graduation is very important to GSU students as it is to the students at most colleges and universities.

Suppose we take a poll (random sample) of 3794 students classified as Juniors and find that 2828 of them believe that they will find a job immediately after graduation.

What is the99% confidence interval for the proportion of GSU Juniors who believe that they will, immediately, be employed after graduation.

1. (0.738, 0.752)
2. (0.727, 0.764)
3. (0.734, 0.757)
4. (0.732, 0.759)

3. Based on the limited amount of available student parking spaces on the GSU campus, students are being encouraged to ride their bikes (when appropriate).

The administration conducted a survey to determine the proportion of students who ride a bike to campus. Of the 127 students surveyed 6 ride a bike to campus.

Which of the following is a reason the administration should not calculate a confidence interval to estimate the proportion of all students who ride a bike to campus? Check all that apply.

1. The sample needs to be random but we don't know if it is.
2. The actual count of bike riders is too small.
3. The actual count of those who do not ride a bike to campus is too small.
4. n*^pis not greater than10.
5. n*(1^p)is not greater than10.