Vanessa Wants to Know About the Safe-Sex Practices of the 4,000

Multiple Choice

Vanessa wants to know about the safe-sex practices of the 4,000 students enrolled at her small, liberal arts college. She obtains a complete list of the names and contact information of the 4,000 students from the campus Registration Office and selects 500 people from the list to participate in her study. Because every student at the college has an equal chance of being selected for this study, Vanessa has a(n) __________.

A) experimental group
B) random sample
C) population
D) field study