The Centers for Disease Control and Prevention (CDC) administers a large number of survey programs for monitoring the status of health and health care in the US. One of these programs is the National Health and Nutrition Examination Survey (NHANES), which interviews and examines a random sample of about 5000 people in the US each year. The survey includes questions about health, nutrition, and behavior while the examination includes physical measurements and lab tests. Another program is the National Hospital Ambulatory Medical Care Survey (NHAMCS), which includes information from hospital records for a random sample of individuals treated in hospital emergency rooms around the country.

(a) To what population can we reasonably generalize findings from the NHANES?
(b) To what population can we reasonably generalize findings from the NHAMCS?
(c) For each of the questions below, indicate which survey, NHANES or NHAMCS, would probably be more appropriate to address the issue.
i. Are overweight people more likely to develop diabetes?
ii. What proportion of emergency room visits in the US involve sports-related injuries?
iii. Is there a difference in the average waiting time to be seen by an emergency room physician between male and female patients?
iv. What proportion of US residents have visited an emergency room within the past year?