In order to assess the opinion of students at the ohio state university on campus safety, a reporter for the student newspaper interviews 15 students he meets walking on the campus late at night who are willing to give their opinion.
1) the sample is:
a) all students at universities with safety issues.
b) the 15 students interviewed.
c) all students approached by the reporter.
d) all those students walking on campus late at night.
2) the method of sampling used is:
a) the gallup poll.
b) simple random sampling.
c) voluntary response.
d) a census.
3) the sample obtained is:
a) a probability sample of students with night classes.
b) a stratified random sample of students feeling safe.
c) a simple random sample of students feeling safe.
d) probably biased.