Answer :
95% confidence interval represents that the true mean waist circumference of all adult women in the United States falls within the range of 99.8 to 102.0 centimeters .
Confidence interval is equal to 95%
As reported by the 2012 National Health and Nutrition Examination Survey.
In the United States,
Mean waist circumference of adult women =99.8 to 102.0 centimeters
Randomly sample a large number of adult women from the United States.
And calculate their mean waist circumference.
95% of the time the true mean waist circumference of all adult women.
In the United States would be captured by the interval of 99.8 to 102.0 centimeters.
Confidence interval only applies to the population of adult women in the United States and cannot be extrapolated to other populations or groups.
Confidence interval is based on the specific sample and methodology used in the survey .
May not necessarily represent the true population parameter with complete accuracy.
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