3. A researcher wanted to study the opinions of all UL students about the campus transit system.
The researcher obtained a list of the e-mail addresses for all of the students registered at UL this
semester, randomly selected 1200 students, and e-mailed them a survey. Only 352 surveys were
returned.
a) What is the population in this study?
b) What is the sample in the study.
c) List at least two potential problems with this study.