The Gallup poll samples 1000 Americans to determine their approval of the president. With 1000 subjects,...
The Gallup poll samples 1000 Americans to determine their approval of the president. With 1000 subjects, what is the margin of error of the estimated approval rating?
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The Gallup poll samples 1000 Americans to determine their
approval of the president. With 1000 subjects,...
On April 3, 2012, President Obama had an approval rating of 47% (according to a Gallup...
On April 3, 2012, President Obama had an approval rating of 47% (according to a Gallup Poll). Suppose a sample of 100 Americans is taken that same week. What is the probability that the sample proportion has between a 42% and a 50% approval rating?
6. The Gallup Poll regularly asks the following question of a random sample of Americans, "Do you approve or disapprove of the way the president is handling his or her job as president?" In J...
6. The Gallup Poll regularly asks the following question of a random sample of Americans, "Do you approve or disapprove of the way the president is handling his or her job as president?" In June 2007, 32% of respondents in a randon sample of 1,007 said that they approve of George W. Bush's performance in June 2008, 28% ofrespondents in an independent random sample of 1,625 Americans said they approve of President Bush. [12 points] a. Does the change between...
10.9 Exercise: Approval Rating Let p denote the proportion of Americans who approve President Trump. In...
10.9 Exercise: Approval Rating Let p denote the proportion of Americans who approve President Trump. In a poll of December, 2018, an estimated approval rating for President Trump was 48% among 3,018 registered voters. Treat the sample as a simple random sample (i.e., a fair representation of all registered voters in U.S.). Is this statistical evidence that the population approval rating is less than 50% of all registered voters in the nation? Use a = 0.05 for the significance level....
HELP NEEDED ASAP 8.62 According to a Gallup poll conducted April 3–6, 2014, 21% of Americans...
HELP NEEDED ASAP 8.62 According to a Gallup poll conducted April 3–6, 2014, 21% of Americans aged 18 to 29 said that college loans and/or expenses were the top financial problem facing their families. Suppose that this poll was based on a random sample of 1450 Americans aged 18 to 29. a. What is the point estimate of the corresponding population proportion? b. Construct a 95% confidence interval for the proportion of all Americans aged 18 to 29 who will...
A particular poll tracks daily the percentage of Americans who approve or disapprove of the performance...
A particular poll tracks daily the percentage of Americans who approve or disapprove of the performance by President 1. Daily results are based on random telephone interviews with approximately 1100 national adults. The poll reports that 51% of adults approve of President 1. The same poll reported an approval rating of 52% for President 2. A news anchor remarks that "President 1 doesn't even get as much approval as President 2 did." Is there evidence that this difference is real?...
6. A recent Gallop poll showed Trump's approval rating 40% with a margin or error of...
6. A recent Gallop poll showed Trump's approval rating 40% with a margin or error of 3%. a) Find the confidence interval. c) Does the confidence interval support that more than 50% of Americans approve of Trump? Why or why not? 7. A recent Gallop poll showed that 672 of 1019 adults nationwide think that marijuana should be legalized. a) Find the margin of error that corresponds to a 95% confidence interval. c) Find the 95% confidence interval estimate of...
A particular poll tracks daily the percentage of Americans who approve or disapprove of the performance...
A particular poll tracks daily the percentage of Americans who approve or disapprove of the performance by President 1. Daily results are based on random telephone interviews with approximately 1100 national adults. The poll reports that 51% of adults approve of President 1. The same poll reported an approval rating of 52% for President 2. A news anchor remarks that "President 1 doesn't even get as much approval as President 2 did." Is there evidence that this difference is real?...
In 2001, the Gallup poll found that 81% of American adults believed that there was a...
In 2001, the Gallup poll found that 81% of American adults believed that there was a conspiracy in the death of President Kennedy. In 2013, the Gallup poll asked 1,039 American adults if they believe there was a conspiracy in the assassination, and found that 634 believe there was a conspiracy ("Gallup news service," 2013). Do the data show that the proportion of Americans who believe in this conspiracy has decreased? Test at the 5% significance level. 1- What is...
In a recent poll of 1000 randomly selected adults, a president's approval rating stood at 52%....
In a recent poll of 1000 randomly selected adults, a president's approval rating stood at 52%. a) Make a 95% confidence interval for his approval rating by all adults in the country. b) Based on the confidence interval, test the null hypothesis that 52% of the country approved of the way he was handling his job at that time.
In a USA Today/Gallup poll conducted November 2-4, 2007, 768 of 1024 randomly selected adult Americans...
In a USA Today/Gallup poll conducted November 2-4, 2007, 768 of 1024 randomly selected adult Americans aged 18 or older stated that a candidates’ position on the issue of family values is extremely or very important in determining their votes for president. a) What is a point estimate for the proportion of adult Americans aged 18 or older for which the issue of family values is extremely or very important in determining their votes for the president? b) Construct a...
6. The Gallup Poll regularly asks the following question of a random sample of Americans, "Do you approve or disapprove of the way the president is handling his or her job as president?" In June 2007, 32% of respondents in a randon sample of 1,007 said that they approve of George W. Bush's performance in June 2008, 28% ofrespondents in an independent random sample of 1,625 Americans said they approve of President Bush. [12 points] a. Does the change between...
10.9 Exercise: Approval Rating Let p denote the proportion of Americans who approve President Trump. In a poll of December, 2018, an estimated approval rating for President Trump was 48% among 3,018 registered voters. Treat the sample as a simple random sample (i.e., a fair representation of all registered voters in U.S.). Is this statistical evidence that the population approval rating is less than 50% of all registered voters in the nation? Use a = 0.05 for the significance level....
6. A recent Gallop poll showed Trump's approval rating 40% with a margin or error of 3%. a) Find the confidence interval. c) Does the confidence interval support that more than 50% of Americans approve of Trump? Why or why not? 7. A recent Gallop poll showed that 672 of 1019 adults nationwide think that marijuana should be legalized. a) Find the margin of error that corresponds to a 95% confidence interval. c) Find the 95% confidence interval estimate of...
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