The Whitman County Fire Department conducted a survey to determine how the 40,000 residents of the county feel about the fire department's ability to meet their needs. A random sample of 690 citizens was selected, and 627 of them said that they feel confident about the fire department's service. The population is:
A) the 627 confident citizens.
B) the 690 citizens surveyed.
C) the 40,000 residents of Whitman County.
D) the employees of the Whitman County Fire Department.

Question

Quizplus · Accepted Answer

The population being studied is the entire 40,000 residents of Whitman County. The sample of 690 citizens is simply a subset of this population and was used to estimate the population proportion of confident citizens. Therefore, the correct answer is C.

The Whitman County Fire Department Conducted a Survey to Determine