The North American Free Trade Agreement (NAFTA) enacted in 1994 is a trilateral trade agreement signed by the United States, Canada, and Mexico. This trade agreement has been controversial since its inception, and Americans remain split on the issue. In a Gallup Poll conducted February 1-5, 2017, 448 out of 973 randomly selected Americans aged 18 or older stated that they believed that NAFTA was bad for the United States.**Questions:**a. Find the point estimate for the proportion of Americans who believe that NAFTA was bad for the United States. Round your answer to 4 decimal places.b. Find the margin of error for a 95% confidence interval. Round your answer to 4 decimal places.c. Construct the 95% confidence interval for the proportion of Americans who believe that NAFTA was bad for the United States. Enter your answer as an open interval of the form (a, b) and round to 3 decimal places.d. Can you conclude that more than half of Americans believe that NAFTA was bad for the United States? - No, the entire confidence interval is below 0.50. - No conclusions can be drawn since the confidence interval contains 0.50. - Yes, the entire confidence is above 0.50.**Image Description:**The image contains a picture of a person speaking at a podium with several flags in the background. There is text explaining the context of NAFTA and a set of statistical questions related to a poll conducted about American opinions on NAFTA.

Answered: Image /qna-images/answer/a55c8c79-1491-43e9-a8f0-33f0bfee7485.jpg

Answered: The North American Free Trade Agreement…

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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3. DETAILS ASWSBE15 9.E.077. You may need to use the appropriate appendix table or technology to answer this question. Vegans are much less common in the United States than in the rest of the world. Suppose in a 2018 survey of 12,000 people in the United States, VeganBits found 60 who are vegans. (a) Develop a point estimate of the proportion of people in the United States who are vegans. (b) Set up a hypothesis test so that the rejection of H will allow you to conclude that the proportion of people in the United States who are vegans exceeds 0.004. (Enter != for # as needed.) H₂₂: (c) Conduct your hypothesis test using a = 0.05. Find the value of the test statistic. (Round your answer to two decimal places.) Find the p-value. (Round your answer to four decimal places.) p-value= State your conclusion. O Reject H. We cannot conclude that the proportion of people in the United States who are vegans exceeds 0.004. O Do not reject H. We cannot conclude that the proportion of people in the…
In a 2021 poll by the Public Religion Research Institution, 2,508 Americans were asked if they agree with the statement, “Violence may be necessary to save the US.” (American Values Survey Sept 16-29, 2021). In the responses, 30% of Republicans, 11% of Democrats, and 17% of Independents agreed with the statement. Overall, 18% of the respondents agreed with the statement. Given a 2.1% margin of error, what is an estimate of the population standard deviation at a 90% level of confidence
5. As a manufacturer of golf equipment, the Spalding Corporation wants to estimate the proportion of golfers who are left-handed. a. How many golfers must be surveyed if we want to be 99% confident that the sample proportion is within 0.025 of the actual value? b. Ifa prior study indicates that 15% of golfers are left-handed, how many golfers must be surveyed if we want to be 99% confident that the sample proportion is within 0.025 of the actual value? MacBook Air
3. A light bulb manufacturer finds that 4% of the bulbs it makes are defective. The quality control officer predicts that 700 bulbs will be defective out of 15,500 bulbs made. Do you agree? Explain.
Among college students, the proportion p who say they’re interested in their congressional district’s election results has traditionally been 75%. After a series of debates on campuses, a political scientist claims that the proportion of college students who say they’re interested in their district’s election results is more than 75%. A poll is commissioned, and 210 out of a random sample of 260 college students say they’re interested in their district’s election results. Is there enough evidence to support the political scientist's claim at the 0.10 level of significance?Perform a one-tailed test. Then complete the parts below.Carry your intermediate computations to three or more decimal places. (If necessary, consult a list of formulas.) A. State the null hypothesis Hoand the alternative hypothesis H1 B. Find the critical value. (Round to three or more decimal places.) C. Is there enough evidence to support the political scientist's claim that the proportion of college students who…
A statistician is advising the government on policy that aims to benefit small bakers. Before going to the government with advice, they seek out the opinion of bakery shop owners. They survey 300 small bakery shop owners and ask whether they believe that the proposed policy will help them. 65% of those surveyed stated that the proposed policy would help them. It is known that there is a total of 3,000 small bakery shop owners in the country. The statistician hopes to find strong evidence that the policy will benefit at least 60% of bakery shop owners. Conduct a hypothesis test at a 1 percent level. Do the findings provide strong evidence that at least 60% of bakery shop owners state that the policy will be beneficial?
Suppose the U.S. president wants to estimate the proportion of the population that supports his current policy toward revisions in the health care system. The president wants the estimate to be within 0.02 of the true proportion. Assume a 90% level of confidence. The president’s political advisors found a similar survey from two years ago that reported that 61% of people supported health care revisions. a. How large of a sample is required? b. How large of a sample would be necessary if no estimate were available for the proportion supporting current policy?
4. Consider the following scatterplot and line of best fit: A. Use the following diagram to explain what is meant by line of best fit. B. Does the point in the box have a positive or a negative residual? Explain. C. Is the point in the box an outlier or an influential point? Explain.
As chairperson of the Rogers County Task Force on Aging, you wish to estimate the proportion of senior citizens in the region who would use a mobile medical check-up program if such a service was implemented. A random sample of 44 senior citizens was polled and it was found that 22 would use such a service. a. Let p represent the proportion of all senior citizens in the region who would utilize the mobile medical check-up program. Find a point estimate for p. (Round result to 3 decimal places.) b. Find a 95% confidence interval for p. (Round results to 3 decimal places.) ? ♥ < c. The Rogers County Director tasks you with doing a larger study, to develop a more precise estimate. The director would like an estimate for the proportion of retired people who would use the mobile medical check-up program that is within 5% of the population percentage, with 95% confidence. Using the original study (described above) as a preliminary estimate for the population proportion p, what is the minimum…
A. The median would be greater than the mean B. The mean would be greater than the median C. The mean and the median would be equal
according to the national household survey on drug use and health, when asked in 2017, 31.0% of those aged 18 to 25 years said they had used cigarettes in the past year, 7.7% said they had used smokeless tobacco
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