Community college tuition: In an ABC News/Washington Post Poll in January 2015, 1,003 adults nationwide answered the following question, “Obama has proposed providing free tuition to attend community colleges at a cost to the federal government of sixty billion dollars over 10 years. Do you support or oppose this proposal?” 53% supported the proposal with a margin of error of 3.5% at a 95% level of confidence. http://www.washingtonpost.com/politics/polling/washington-postabc-news-poll-january-1215/2015/01/22/9eba07b0-9f19-11e4-91fc-7dff95a14458_page.html Which of the following statements is correct about the 95% confidence interval? We are 95% confident that between 46% and 60% of all adults nationwide will support the free community college tuition proposal. We are 95% confident that between 49.5% and 56.5% of all adults nationwide will support the free community college tuition proposal. We are 95% confident that 53% of the 1,003 adults in the sample will support the free community college tuition proposal. We are confident that 95% of the 1,003 adults in the sample will support the free community college tuition proposal.
Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
Community college tuition: In an ABC News/Washington Post Poll in January 2015, 1,003 adults nationwide answered the following question, “Obama has proposed providing free tuition to attend community colleges at a cost to the federal government of sixty billion dollars over 10 years. Do you support or oppose this proposal?” 53% supported the proposal with a margin of error of 3.5% at a 95% level of confidence.
http://www.washingtonpost.com/politics/polling/washington-postabc-news-poll-january-1215/2015/01/22/9eba07b0-9f19-11e4-91fc-7dff95a14458_page.html
Which of the following statements is correct about the 95% confidence interval?
- We are 95% confident that between 46% and 60% of all adults nationwide will support the free community college tuition proposal.
- We are 95% confident that between 49.5% and 56.5% of all adults nationwide will support the free community college tuition proposal.
- We are 95% confident that 53% of the 1,003 adults in the sample will support the free community college tuition proposal.
- We are confident that 95% of the 1,003 adults in the sample will support the free community college tuition proposal.
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