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Which of the following is true based on the results of this survey?

Which of the following is true based on the results of this survey?

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
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A Gallup survey based on telephone and face-to-face interviews with 4,220 adults in China, aged 15 and older suggests that 30% smoke regularly or occasionally. The following is also noted "one can say with 95% confidence that the maximum margin of sampling error is 2.4 percentage points". Which of the following is true based on the results of this survey?

  • Exactly 30% of all Chinese adults smoke.

     

  • If we were to randomly sample another group of 4,220 Chinese adults we would find that exactly 30% of them smoke as well.
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