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Elementary Statistics | 12th Edition | ISBN: 9780321836960 | Authors: Mario F. Triola
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Observational Study or Experiment Are the data described

Chapter 1, Problem 9CQQ

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QUESTION:

Problem 9CQQ

 

Observational Study or Experiment Are the data described in Exercise 8 the result of an observational study or an experiment?

Exercise 8. Parameter and Statistic In a recent Gallup poll, pollsters randomly selected adults and asked them whether they smoke. Among the adults who responded to the survey question, 21% said that they did smoke. Is that value of 21% an example of a statistic or an example of a parameter?

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QUESTION:

Problem 9CQQ

 

Observational Study or Experiment Are the data described in Exercise 8 the result of an observational study or an experiment?

Exercise 8. Parameter and Statistic In a recent Gallup poll, pollsters randomly selected adults and asked them whether they smoke. Among the adults who responded to the survey question, 21% said that they did smoke. Is that value of 21% an example of a statistic or an example of a parameter?

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