The PAC-10 Conference consists of ten schools. A researcher wants to study and compare the attitudes of the private and public university students within the PAC-10. He wants to select 200 students to interview and wants to use stratified sampling. Which of the following strategies will enable him to accomplish his goal?
A) Randomly select 100 students from UCLA and 100 from USC since they are in the same city.
B) Select 100 students out of a large lecture section (more than 200) at California and Stanford since the students are naturally collected there already..
C) Select 100 students out the combined enrollments of USC and Standford, and 100 students out of the combined enrollments of the other eight universities, since he is not interested in cluster sampling.
D) Randomly select 100 students from a randomly selected public PAC-10 university outside California and 100 students from either USC or Stanford, since he is not interested in having all the students in the same state.

Question

The PAC-10 Conference consists of ten schools.  A researcher wants to study and compare the attitudes of the private and public university students within the PAC-10. He wants to select 200 students to interview and wants to use stratified sampling. Which of the following strategies will enable him to accomplish his goal?
A) Randomly select 100 students from UCLA and 100 from USC since they are in the same city. 
B) Select 100 students out of a large lecture section (more than 200) at California and Stanford since the students are naturally collected there already.. 
C) Select 100 students out the combined enrollments of USC and Standford, and 100 students out of the combined enrollments of the other eight universities, since he is not interested in cluster sampling. 
D) Randomly select 100 students from a randomly selected public PAC-10 university outside California and 100 students from either USC or Stanford, since he is not interested in having all the students in the same state.

Quizplus · Accepted Answer

The researcher wants to use stratified sampling to compare the attitudes of private and public university students within the PAC-10. Therefore, he needs to divide the population of students into two strata based on the type of university they attend. Option A does not guarantee equal representation from each type of university, whereas option B only includes two universities and does not account for the other eight. Option D only selects public universities outside California and only one private university, which does not represent the entire population. Option C involves selecting 100 students from the combined enrollments of USC and Stanford (private universities) and 100 from the combined enrollments of the other eight universities (public universities), ensuring equal representation from both strata.

The PAC-10 Conference Consists of Ten Schools