Answered: A radio talk show host with a large…

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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A radio talk show host with a large listening audience is interested in the proportion p of adults in his listening area that think that the United States should not be at war in Afghanistan. He asks this question to his listeners "Do you think the United States should be at war in Afghanistan?" He asks his listeners to phone in and vote "yes" if they agree that the United States should be at war in Afghanistan and "no" if they disagree. Of the 100 people who phoned in 85% answered "yes". Which of the following assumptions for inference about a proportion using a confidence interval was violated?

Select one:

1. The data are a simple random sample from the population of interest.

2.There appear to be no violations.

3. The sample size "n" is so large that both the count of successes n * p and the count of failures n(1-p) are 10 or more

4.The population is at least 10 times as large as the sample.

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