Every four years, when it is time to elect a new president, we pay much attention to surveys, which we usually call “polls.” Political pollsters typically ask approximately one thousand people, of the 300 million people in the United States, who they plan to vote for. They use that information to predict how the election will turn out. Who is the sample for a presidential poll?Group of answer choicesevery person who is planning on votingevery Americanpeople who have strong political opinionsthe 1,000 people asked whom they will vote for

In the context of election polling in the Philippines, what is a "sample"? The entire population of voters in the country. The group of voters who favor various candidates. The percentage of voters who participate in the election. A few hundred or a few thousand voters selected for an opinion poll.

A political candidate surveys voters to learn about their opinions on key issues. The politician’s data team notices that most respondents are people who have already voted in the current election. The fairness of the survey could be improved by over-sampling people from which group?1 pointPeople who have not yet voted in the electionPeople who voted against the candidate in the current electionFirst-time voters who already voted in the current electionPeople who voted for the candidate in the current election

A political scientist needs to poll all voters in Seoul, South Korea, in order to predict the outcome of an election. Because it would be impossible to collect data from every single person in the city, the political scientist polls a part of the population that is representative of the whole. What does this scenario describe? 1 分Choosing a data typeChoosing quantitative dataUsing a sampleUsing a population

In a sample of 3,200 registered voters, 1,440, or 45%, approve of the way the President is doing his job. The 45% approval is an example ofGroup of answer choicespopulationsampledescriptive statisticsstatistical inference

A political pollster is conducting an analysis of sample results in order to make predictions on election night.Assuming a two-candidate election,if a specific candidate receives at least 54%of the vote in the sample,that candidate will be forecast as the winner of the election.You select a random sample of 100 voters. Suppose that the sample size was increased to 400.Repeat process(a)through(c),using this new sample size.Comment on the difference. The probability isthat a candidate will be forecast as the winner when the popuio percentage of her vote is50.1%. (Round to four decimal places as needed.)