In a large mid-western university with 30 different
departments, the university is considering eliminating standardized
scores from their admission requirements. The university wants to
find out whether the students agree with this plan. They decide to
randomly select 100 students from each department, send them a
survey, and follow up with a phone call if they do not return the
survey within a week. What kind of sampling plan did they
use?
(a) Stratified random sampling
(b) Simple random sampling
(c) Multi-stage sampling
(d) Cluster sampling