The National Health Interview Survey Is Conducted Annually by the Centers

Multiple Choice

The National Health Interview Survey is conducted annually by the Centers for Disease Control and Prevention. By examining information gathered from a national sample of 600 respondents throughout the United States, it was able to announce that 11.3 percent of all Americans adults under age 65 lacked health insurance. To make this statement, the Centers for Disease Control and Prevention used

A) focus groups.
B) causal research.
C) internal secondary data.
D) statistical inference.
E) interpolation.