Reba wants to examine the TV-viewing habits of 18- to 25-year-old males in the United States.As it is quite impossible to include all males of this age group in her study,she selects a smaller group of 18- to 25-year-old males to survey.The males included in her study are called a(n)

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Reba has selected a smaller group of 18- to 25-year-old males to survey. This smaller group is called a sample.

Reba Wants to Examine the TV-Viewing Habits of 18- to 25-Year-Old