A researcher is interested in studying the internet usage habits of children of middle school age. She
randomly selects 2 middle schools in Los Angeles and sends a survey home with the 600 students enrolled in
those schools. 275 of the surveys were returned.
Describe the sampling frame for this survey.
O All children of middle school age
O All children of middle school age in Los Angeles.
O All children enrolled in a Los Angeles middle school.
O The 600 students who received a survey.
The 275 students who returned their survey.
O None of the above.
