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ng: What does the survey tell us? come an integral part of our lives. Because it is every citizen has the ability to interpret survey ure the focus of this project. Use the followlng. oll of 3297 U.S. adults showed that 54% of lents said it is unlikely that they would use g car. Data y results to construct a 95% confidence inter-

ng: What does the survey tell us? come an integral part of our lives. Because it is every citizen has the ability to interpret survey ure the focus of this project. Use the followlng. oll of 3297 U.S. adults showed that 54% of lents said it is unlikely that they would use g car. Data y results to construct a 95% confidence inter-

MATLAB: An Introduction with Applications
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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Critical Thinking: What does the survey tell us? Surveys have become an integral part of our lives. Because it is so important that every citizen has the ability to interpret survey results, surveys are the focus of this project. Use the followlng. A Gallup poll of 3297 U.S. adults showed that 54% of the respondents said it is unlikely that they would use a self-driving car. 6. In reference to another survey, the president of a company wrote to the Associated Press about a nationwide survey of 1223 subjects. Here is what he wrote: Analyzing the Data 1. Use the survey results to construct a 95% confidence inter- val estimate of the percentage of all U.S. adults who say they are unlikely to use self-driving cars. 2. Find the margin of error for this survey. How does it com- pare to this statement from Gallup: "For results based on the total sample of 3297 U.S. adults, the margin of sampling er- ror is ±2 percentage points at the 95% confidence level."? When you or anyone else attempts to tell me and my associates that 1223 persons account for our opinions and tastes here in America, 1 get mad as helI! How dare you! When you or anyone else tells me that 1223 people represent America, it is astounding and unfair and should be outlawed. 3. Explain why or why not an online news website would be justified in publishing this claim: "Most U.S. adults say they are unlikely to use self-driving cars." 4. Assume that you are an online reporter. Write a description of the survey results for your website. 5. A common criticism of surveys is that they poll only a very small percentage of the population and therefore cannot be accurate. Given that a sample of size 3297 from a population of 256,338.241 adults is a sample that is only 0.001% of the population, is that sample size too small? Write a brief expla- nation of why the sample size of 3297 is or is not too small. The writer of that letter then proceeds to claim that because the sample size of 1223 people represents 120 million people, his single letter represents 98,000 (120 million divided by 1223) who share the same views. Do you agree or disagree with this claim? Write a response that either supports or refutes this claim.
Transcribed Image Text:Critical Thinking: What does the survey tell us? Surveys have become an integral part of our lives. Because it is so important that every citizen has the ability to interpret survey results, surveys are the focus of this project. Use the followlng. A Gallup poll of 3297 U.S. adults showed that 54% of the respondents said it is unlikely that they would use a self-driving car. 6. In reference to another survey, the president of a company wrote to the Associated Press about a nationwide survey of 1223 subjects. Here is what he wrote: Analyzing the Data 1. Use the survey results to construct a 95% confidence inter- val estimate of the percentage of all U.S. adults who say they are unlikely to use self-driving cars. 2. Find the margin of error for this survey. How does it com- pare to this statement from Gallup: "For results based on the total sample of 3297 U.S. adults, the margin of sampling er- ror is ±2 percentage points at the 95% confidence level."? When you or anyone else attempts to tell me and my associates that 1223 persons account for our opinions and tastes here in America, 1 get mad as helI! How dare you! When you or anyone else tells me that 1223 people represent America, it is astounding and unfair and should be outlawed. 3. Explain why or why not an online news website would be justified in publishing this claim: "Most U.S. adults say they are unlikely to use self-driving cars." 4. Assume that you are an online reporter. Write a description of the survey results for your website. 5. A common criticism of surveys is that they poll only a very small percentage of the population and therefore cannot be accurate. Given that a sample of size 3297 from a population of 256,338.241 adults is a sample that is only 0.001% of the population, is that sample size too small? Write a brief expla- nation of why the sample size of 3297 is or is not too small. The writer of that letter then proceeds to claim that because the sample size of 1223 people represents 120 million people, his single letter represents 98,000 (120 million divided by 1223) who share the same views. Do you agree or disagree with this claim? Write a response that either supports or refutes this claim.
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