For each of the following sampling situations, identify the population as exactl

Question

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) 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. o all current students, or perhaps all current students who were enrolled during the year prior to the change o the weeks that the interviews with the students are conducted O all colleges that changed their core curriculum o the feedback from students during each of the 12 weeks O the 5 students that are interviewed in each week (b) The American Community Survey (ACS) will replace 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. O all households in North America o all households that are involved in the U.S. census o the 250,000 households surveyed o all U.S. households O the upper-class households in the 250,000 households surveyed (c) 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?" O the 1161 adults surveyed along with their communities O all adults in North America O adult residents of the U.S. O the 1161 adults surveyed o all politically active adults

Explanation / Answer

A population denotes all the individuals at which the suvery is targeted.

(a) Since the interview is targeted at the students the population is:

all current students, or perhaps all current students who are enrolled during the year prior to the change.

(b) Since the survey is targeted at the households in the census, the population is:

all households that are involved in the U.S census.

(c) Since the poll is targeted at adults of the country, the population is:

adult residents of the U.S.

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