Question

In order to obtain a sample of undergraduate students in the United States, a simple random sample of 10 states is selected. From each of the selected states, 10 colleges or universities are chosen at random. Finally, from each of these 100 colleges or universities, a simple random sample of 20 undergraduate students is selected. Thus, the final sample consists of 2,000 undergraduates. This is an example of: simple random sampling. stratified sampling. multistage sampling. convenience sampling. none of the above.

          In order to obtain a sample of undergraduate students in the
United States, a simple random sample of 10 states is selected.
From each of the selected states, 10 colleges or universities are
chosen at random. Finally, from each of these 100 colleges or
universities, a simple random sample of 20 undergraduate students
is selected. Thus, the final sample consists of 2,000
undergraduates. This is an example of: simple random sampling.
stratified sampling. multistage sampling. convenience sampling.
none of the above.

Added by Daniel M.

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