John Agele wants to conduct a survey of all former students of Teras A&M who are currently residing in Teras. He does not believe he will be able to get a complete and accurate list of former students from TAMU. However, he can get a list of all active former student associations in Teras. From that list, he can randomly select associations and then randomly select members within each association. This is an example of a:
- Multistage Cluster Sample, random
a. Single Random Sample, random
b. Multistage Cluster Sample, random
c. Stratified Sample, nonrandom
d. Systematic Sample, nonrandom