1. For each of the following sampling situations, identify the population as precisely as possible. Describe the individuals the population consists of and specify which individuals fall within the population. If the information given is incomplete, complete the description in a reasonable manner.

A college has changed its core curriculum and wants to obtain detailed feedback from 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 1,161 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 1,161 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.

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,

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Vickynehra Vickynehra · Answer 2 · 2024-01-23T10:05:18-05:00

In the first sampling situation, the population is students enrolled in the college during the specified semester. For the ACS, the population is all U.S. households. In the political opinion poll scenario, the target population is all adult residents of the U.S.

When identifying the population in a sampling situation, it refers to the entire group of individuals or instances that you want to draw conclusions about. In the first scenario, the appropriate description for the population is students enrolled in the college during the first 12 weeks of the coming semester as the feedback is about the core curriculum changes impacting those specific students. For option b, the given answer is correct since it specifies the time frame and the group affected by the curriculum change.

In the case of the American Community Survey (ACS), the population is all U.S. households, as the aim is to collect data representative of the entire nation, which goes beyond the 250,000 addresses contacted each month. Option b correctly identifies the population for the ACS.

For the political opinion poll, the intended population is all adult residents of the U.S. since the objective of such a poll is to estimate the overall public opinion on political parties, which makes option b the accurate representation of the population.