The 2012 National Health and Nutrition Examination Survey reports a 95%95% confidence interval of 99.899.8 to 102.0102.0 centimeters for the mean waist circumference of adult women in the United States. (a) What is captured by this confidence interval? We are trying to capture the true average waist circumference of adult women in the United States. We are trying to capture the true average waist circumference of adult men in the United States. We are trying to capture the true average waist circumference of adults in the United States. We are trying to capture a average waist circumference of a sample of adult women in the United States.