The faculty senate at a large university wanted to know what proportion of the students thought foreign language classes should be required for everyone. The statistics department offered to cooperate in conducting a survey, and a simple random sample of 500 students was selected from all the students enrolled in statistics classes. A survey form was sent by email to these 500 students.

1. In this case, the population of interest is:
   
   
   • all the students at the university.
   • all the students enrolled in a statistics class.
   • the 500 students who got the email survey.
   • the students who responded to the email survey.
   • all the students who think that foreign language classes should be required for everyone.
   
   
   
2. In this case, the sampling frame is:
   
   
   • all the students at the university.
   • all the students enrolled in a statistics class.
   • the 500 students who got the email survey.
   • the students who responded to the email survey.
   • all the students who think that foreign language classes should be required for everyone.
   
   
   
3. Which of the following is true about this study?
   
   
   • Since the sample is random, it is representative of the population of interest.
   • Even though the sample is random, it is not representative of the population of interest.