Homework Answers
This is incorrect because the interpretation should be that at least 19 out of 20 times the population parameter would be contained in the confidence interval not the margin of error.
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3. The Associated Press is a large entity that collects opinion polls online. Poll results are...
USA Today (Feb 15. 2007) reported on the results of an opinion poll in which adults...
USA Today (Feb 15. 2007) reported on the results of an opinion poll in which adults were asked what one thing they are most likely to do when they are home sick with a cold or the flu. In the survey, 63% said that they are most likely to sleep and 18% said they would watch television. Although the sample size was not reported, typically opinion polls include approximately 1,000 randomly selected respondents. (a) Assuming a sample size of 1,000...
Question 1 (Essay Worth 10 points) (03.01 LC) An online article about an opinion poll says that "41% of Americans own a...
Question 1 (Essay Worth 10 points) (03.01 LC) An online article about an opinion poll says that "41% of Americans own a gun." The poll is based on online survey interviews with 2,700 adults chosen randomly from a numbered list of 750,000 responses from around the United States, excluding New England states. Part A: What is the population and sample in this poll? (3 points) Part B: What type of sampling is used? (3 points) Part C: Are there any...
A poll was conducted by the marketing department of a video game company to determine the...
A poll was conducted by the marketing department of a video game company to determine the popularity of a new game that was targeted to be launched in three months. Telephone interviews with 1,500 young adults were conducted which revealed that 49% said they would purchase the new game. The margin of error was ±3 percentage points. Which of the following is true? (one or more answers) A. A sample size of 752 is needed to obtain a 90% confidence...
Surveys have become an integral part of our lives. Because it is so important that every...
Surveys have become an integral part of our lives. Because it is so important that every citizen have the ability to interpret survey results, surveys are the focus of this project. The Gallup Poll recently conducted a survey of 2,558 U.S. adults and found that 46% of those surveyed have dealt with substance abuse in their families. 1. Use the survey results to construct a 95% confidence interval to estimate the percentage of all U.S. adults who have dealt with...
In a recent poll of 1 adults current debt during the next three months. A more...
In a recent poll of 1 adults current debt during the next three months. A more detailed poll surveyed 1288 adult groups, 18-29, 30-49, 50-64, and 65+. Complete parts a and b below ) Do you expect the 95% confidence interval for the true proportion of all 18-to 29-year-olds who are wormed to be wider or narrower than the 95% c for the true proportion of all consumers? Explain Choose the correct answer below O A The interval for the...
Suppose a poll conducted at a certain college during their most recent spring semester asked 695...
Suppose a poll conducted at a certain college during their most recent spring semester asked 695 college students whether or not a privately owned dining hall should be allowed on campus. The response "Yes, it should" was selected by 38% of the respondents. (a) Suppose the researchers who conducted the poll reported "For results based on the total college population, once can say with 95% confidence that the margin of sampling error is no greater than 4 percentage points." Explain...
First, read the article on "The Delphi Method for Graduate Research." ------ Article is posted below...
First, read the article on "The Delphi Method for Graduate Research." ------ Article is posted below Include each of the following in your answer (if applicable – explain in a paragraph) Research problem: what do you want to solve using Delphi? Sample: who will participate and why? (answer in 5 -10 sentences) Round one questionnaire: include 5 hypothetical questions you would like to ask Discuss: what are possible outcomes of the findings from your study? Hint: this is the conclusion....
STA2221 examples on CI & Testing of Hypothesis Name MULTIPLE CHOICE. Choose the one alternative that...
STA2221 examples on CI & Testing of Hypothesis Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answer the question Provide an appropriate response. 1) Find the critical value,te for 0.99 and n-10. A) 3.250 B) 3.169 1.833 D) 2.262 2) Find the critical value to forc=0.95 and n=16. A) 2.947 B) 2.602 2120 D) 2.131 3) Find the value of E, the margin of error, for A) 1.69 B) 0.42 0.99, n=16 and s=2.6. C)...
Question 1 (Essay Worth 10 points) (03.01 LC) An online article about an opinion poll says that "41% of Americans own a gun." The poll is based on online survey interviews with 2,700 adults chosen randomly from a numbered list of 750,000 responses from around the United States, excluding New England states. Part A: What is the population and sample in this poll? (3 points) Part B: What type of sampling is used? (3 points) Part C: Are there any...
Surveys have become an integral part of our lives. Because it is so important that every citizen have the ability to interpret survey results, surveys are the focus of this project. The Gallup Poll recently conducted a survey of 2,558 U.S. adults and found that 46% of those surveyed have dealt with substance abuse in their families. 1. Use the survey results to construct a 95% confidence interval to estimate the percentage of all U.S. adults who have dealt with...
In a recent poll of 1 adults current debt during the next three months. A more detailed poll surveyed 1288 adult groups, 18-29, 30-49, 50-64, and 65+. Complete parts a and b below ) Do you expect the 95% confidence interval for the true proportion of all 18-to 29-year-olds who are wormed to be wider or narrower than the 95% c for the true proportion of all consumers? Explain Choose the correct answer below O A The interval for the...
Suppose a poll conducted at a certain college during their most recent spring semester asked 695 college students whether or not a privately owned dining hall should be allowed on campus. The response "Yes, it should" was selected by 38% of the respondents. (a) Suppose the researchers who conducted the poll reported "For results based on the total college population, once can say with 95% confidence that the margin of sampling error is no greater than 4 percentage points." Explain...
STA2221 examples on CI & Testing of Hypothesis Name MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answer the question Provide an appropriate response. 1) Find the critical value,te for 0.99 and n-10. A) 3.250 B) 3.169 1.833 D) 2.262 2) Find the critical value to forc=0.95 and n=16. A) 2.947 B) 2.602 2120 D) 2.131 3) Find the value of E, the margin of error, for A) 1.69 B) 0.42 0.99, n=16 and s=2.6. C)...
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