Obesity is defined as having a Body Mass Index (BMI = 30 grams/kilogram2) over 30. A statistics

Question:

Obesity is defined as having a Body Mass Index (BMI = 30 grams/kilogram2) over 30. A statistics practitioner took a random sample of American adults and classified their BMI as either 1. Under 20, 2. 20–30, 3. Over 30. There are 234,564,000 American adults. Estimate with 95% confidence the number of Americans who are obese.