Fuel Consumption and Cars
The administration at the University of Nebraska in Lincoln is interested in student reaction to a planned parking garage on campus. A dormitory near the proposed site is selected and several Student Senate members volunteer to solicit responses. One Thursday evening, the volunteers each take a specific dorm wing, knock on doors, and record student answers to several prepared questions.
a. Is this an observational or an experimental study?
b. Describe the sample in this problem.
c. Is this a random sample? Justify your answer.