A college professor decides to run for Congress in a district with 450,000 registered voters. In a survey she commissioned, 58% of the 4000 registered voters interviewed indicated that they plan to vote for her. The population of interest is the:

A. 450,000 registered voters in the district
B. 42% or 1,680 voters interviewed who plan not to vote for her
C. 58% or 2,320 voters interviewed who plan to vote for her
D. 4,000 registered voters interviewed

Is it really A?

Yes.

Here's a hint: 4,000 registered voters is the sample size. Can you now determine the population of interest?

To determine the correct answer, we need to understand what the population of interest is in this scenario.

In this case, the population of interest refers to the group of people that the survey results are intended to represent. It is important to note that the survey was conducted among a sample of registered voters, but the population of interest may not necessarily be limited to just those who were surveyed.

The options provided are as follows:

A. 450,000 registered voters in the district
B. 42% or 1,680 voters interviewed who plan not to vote for her
C. 58% or 2,320 voters interviewed who plan to vote for her
D. 4,000 registered voters interviewed

Now let's analyze each option:

Option A states that the population of interest is the 450,000 registered voters in the district. This seems reasonable since the professor is running for Congress in this district, and the survey aims to understand the voting intentions of the registered voters.

Option B suggests that the population of interest is the 1,680 voters interviewed who plan not to vote for her. This is incorrect as it focuses only on one segment of the population rather than the entire registered voter population.

Option C states that the population of interest is the 2,320 voters interviewed who plan to vote for her. Similar to option B, this option also excludes a significant portion of the registered voter population.

Option D refers to the 4,000 registered voters interviewed. While this option represents the survey sample size, it does not necessarily correspond to the entire population of interest.

Based on the above analysis, the most appropriate answer would be A. 450,000 registered voters in the district. This option accounts for the entire population of registered voters in the district, which is the group the survey aims to represent.