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 14.1 percent of all Americans lacked health insurance. To make this statement, the Centers for Disease Control and Prevention had to use
A)focus groups.
B)no constraints.
C)internal secondary data.
D)statistical inference.
E)interpolation.

Question

Quizplus · Accepted Answer

The Centers for Disease Control and Prevention used statistical inference, which involves drawing conclusions based on a sample to make a statement about the entire population. In this case, they examined a sample of 600 respondents and used that information to estimate the percentage of all Americans who lacked health insurance.

The National Health Interview Survey Is Conducted Annually by the Centers