A political poll is taken by asking 1000 people who they would vote for: Candidate H,...
A political poll is taken by asking 1000 people who they would vote for: Candidate H, Candidate T. The numbers came in at 46%, 54%, respectively. What are the probabilities of more than 4% deviations from the two candidate numbers?
Homework Answers
The estimated proportion 
is approximately normally distributed with mean 
and standard deviation 
as long as 
and 
. The probabilities of more than 4% deviations from the two
candidate numbers is
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A political poll is taken by asking 1000 people who they would
vote for: Candidate H,...
If, based on a sample size of 200, a political candidate found that 125 people would...
If, based on a sample size of 200, a political candidate found that 125 people would vote for her in a two-person race, what is the 99% confidence interval for her expected proportion of the vote? Would she be confident of winning based on this poll? Use the appropriate formula and verify your result using the confidence intervals workbook.
If, based on a sample size of 950, a political candidate finds that 514 people would...
If, based on a sample size of 950, a political candidate finds that 514 people would vote for him in a two-person race, what is the 90% confidence interval for his expected proportion of the vote? Would he be confident of winning based on this poll? | || A 90% confidence interval for his expected proportion of the vote is || (Use ascending order. Round to four decimal places as needed.)
A political candidate has asked you to conduct a poll to determine what percentage of people...
A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 4% margin of error at a 90% confidence level, what size of sample is needed? Give your answer in whole people.
A political candidate has asked you to conduct a poll to determine what percentage of people...
A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 4% margin of error at a 95% confidence level, what size of sample is needed? Hint: Textbook Video [+]
10. A political candidate has asked you to conduct a poll to determine what percentage of...
10. A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 1% margin of error at a 90% confidence level, what size of sample is needed? Give your answer in whole people. 11. In a political poll 48% of people supported Propostion A. The margin of error was ±2% for a 80% confidence interval. What are the upper and lower limits of the confidence interval? Enter...
Question 8 7 < > A political observer claims that candidate A would win more than...
Question 8 7 < > A political observer claims that candidate A would win more than 50% of votes in the upcoming election. 95% confidence intervals for the true proportion of all voters who would vote for candidate A obtained from four different samples are shown below. How many of these intervals would provide enough evidence to support the claim? (0.478, 0.547) (0.44, 0.527) (0.435, 0.494) (0.526, 0.578) 00 01 O2 03 04 > Next Question
1. A political candidate has asked you to conduct a poll to determine what percentage of...
1. A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 4% margin of error at a 95% confidence level, what size of sample is needed? Give your answer in whole people. Insurance companies are interested in knowing the population percent of drivers who always buckle up before riding in a car. They randomly survey 415 drivers and find that 286 claim to always buckle up....
A polling firm called 1,000 likely voters to ask about their political preferences. Of those polled, 520 indicated that they would vote for the incumbent candidate.
A polling firm called 1,000 likely voters to ask about their political preferences. Of those polled, 520 indicated that they would vote for the incumbent candidate. Determine the point estimate for the proportion of voters in the election district who will vote for the incumbent.What is the sampling distribution for p in this example?Approximately how many voters must be polled for a margin of error equal to .01, assuming a confidence level of 95%? Show your work.
When doing polling, for instance to figure out how popular a given candidate is, a common trick is to just ask N many people whether they support that candidate, and take the support to be the faction of people who say yes: if 70 people support the candid
When doing polling, for instance to figure out how popular a given candidate is, a common trick is to just ask N many people whether they support that candidate, and take the support to be the faction of people who say yes: if 70 people support the candidate out of 100 asked, we estimate the support at 70% or 0.7. Suppose that the probability a person supports a candidate is p, which you do not know. Let pˆN be the...
To qualify for the December 2019 debate, a Democratic candidate for President must attract 4% support...
To qualify for the December 2019 debate, a Democratic candidate for President must attract 4% support in four qualifying polls taken between October 16 and December 12. For the purposes of part (A), you may assume: Each participant within a poll is independent A candidate’s true support is 3%; that is, 3% (0.03) of Democratic voters would vote for this candidate for President in a Democratic primary A) If we take a poll of 1000 randomly selected Democratic voters, what...
If, based on a sample size of 950, a political candidate finds that 514 people would vote for him in a two-person race, what is the 90% confidence interval for his expected proportion of the vote? Would he be confident of winning based on this poll? | || A 90% confidence interval for his expected proportion of the vote is || (Use ascending order. Round to four decimal places as needed.)
A political candidate has asked you to conduct a poll to determine what percentage of people support her. If the candidate only wants a 4% margin of error at a 95% confidence level, what size of sample is needed? Hint: Textbook Video [+]
Question 8 7 < > A political observer claims that candidate A would win more than 50% of votes in the upcoming election. 95% confidence intervals for the true proportion of all voters who would vote for candidate A obtained from four different samples are shown below. How many of these intervals would provide enough evidence to support the claim? (0.478, 0.547) (0.44, 0.527) (0.435, 0.494) (0.526, 0.578) 00 01 O2 03 04 > Next Question
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