Question

A researcher wants to take a simple random sample of about 5%
of the student body at each of two schools. The university has
approximately 20,000 students, and the college has about 5000
students. Identify each of the following as true or false and
justify your answer.

(a) The sampling variability is the same for both
schools.

True. The sample sizes are different.

True. The sample sizes are the same.

False. The sample sizes are different.

False. The sample sizes are the same.

(b) The sampling variability for the university is higher than
that for the college.

True. The university has more students.

True. The university has less students.

False. The university has more students.

False. The university has less students.

(c) The sampling variability for the university is lower than
that for the college.

True. The university has more students.

True. The university has less students.

False. The university has more students.

False. The university has less students.

(d) No conclusion about the sampling variability can be stated
without knowing the results of the study.

true

False. Because we know the approximate sample sizes, we can
make some conclusions about the sampling variability ahead of
time.

False. We can always make a conclusion about the sampling
variability.

none of the above

Answer #1

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