Question

1. For each of the following sampling situations, identify the population as exactly as possible. That is, say what kind of individuals the population consists of and say exactly which individuals fall in the population. If the information given is not complete, complete the description of the population in a reasonable way. A college has changed its core curriculum and wants to obtain detailed feedback information from the students during each of the first 12 weeks of the coming semester. Each week, a random sample of 5 students will be selected to be interviewed.

a. The population is all current students.
b. The population is students in the college during the first 12 weeks of the coming semester.
c. The population is the 60 students selected during the first 12 weeks of the coming semester.
d. The population is students in the coming semester.

2. The American Community Survey (ACS) replaced the census long form starting with the 2010 census. The main part of the ACS contacts 250,000 addresses by mail each month, with follow-up by phone and in person if there is no response. Each household answers questions about their housing, economic, and social status.

a. The population is 250,000 households.
b. The population is all U.S. households.
c. The population is all households that are being contacted by the ACS.
d. The population is U.S. households at 2010.

3. An opinion poll contacts 1161 adults and asks them, Which political party do you think has better ideas for leading the country in the twenty-first century?

a. The population is 1161 U.S. adults that supply information.
b. The population is all adult residents of the U.S.
c. The population is political parties.
d. None of the above.

Answer 1

First question: Answer is C

Second question: Answer is C

Third question: Answer is A

Explanation:

For the first question, the option is C since there were 5 interviewees per week, which gives a total of 5x12 = 60, that is, an exact sample population of 60.

For the second question, the exact population is of all the 250,000 households that are being contacted by the ACS.

For the third question, the population is 1161 American adults who if they provide information about the political party that they believe has better ideas to lead the country in the 21st century,