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Identify the following as either an Observational or an experimental study a. a survey of drinking habits among students b. warning one group of students
Identify the following as either an Observational or an experimental study
a. a survey of drinking habits among students
b. warning one group of students that you are going to take blood alcohol levels next Monday to test for alcohol and comparing them to a group that you did not warn
c. taking blood samples to measure blood alcohol levels during Monday morning lectures
d. a researcher joined a biker gang to study their lifestyle
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