A researcher wants to study the effects of drinking on college students' study habits. She chooses to survey all of the students in her Survey of the Criminal Justice System course. This is an example of which type of sampling design? A researcher wants to study the effects of drinking on college students' study habits. She chooses to survey all of the students in her Survey of the Criminal Justice System course. This is an example of which type of sampling design? Convenience sample Cluster sample Theoretical sample Simple random sample