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Statistics / The Practice of Statistics 5 / Chapter 8.2 / Problem 42

The Practice of Statistics | 5th Edition | ISBN: 9781464108730 | Authors: Daren S. Starnes, Josh Tabor

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A TV poll A television news program conducts a call-in poll about a proposed city ban on

Chapter 8, Problem 42

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QUESTION:

A TV poll A television news program conducts a call-in poll about a proposed city ban on handgun ownership. Of the 2372 calls, 1921 opposed the ban. The station, following recommended practice, makes a confidence statement: 81% of the Channel 13 Pulse Poll sample opposed the ban. We can be 95% confident that the true proportion of citizens opposing a handgun ban is within 1.6% of the sample result. Is the stations conclusion justified? Explain.

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QUESTION:

A TV poll A television news program conducts a call-in poll about a proposed city ban on handgun ownership. Of the 2372 calls, 1921 opposed the ban. The station, following recommended practice, makes a confidence statement: 81% of the Channel 13 Pulse Poll sample opposed the ban. We can be 95% confident that the true proportion of citizens opposing a handgun ban is within 1.6% of the sample result. Is the stations conclusion justified? Explain.

ANSWER:

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No, because this makes the sample a convenience sample instead of a simple random sample.

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