Suppose that the proportion of all American adults that fit the medical definition of being obese is 0.23. A large medical clinic would like to determine if the proportion of their patients that are obese is higher than that of all American adults. The clinic takes a simple random sample of 30 of their patients and finds that 9 patients in the sample are obese.What is the population of interest?

The 30 patients surveyed

All American adults

All patients at the large medical clinic

The 9 patients that are obese