question archive To select a sample of undergraduate students in the United States, you select a simple random sample of four states
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you select a simple random sample of four states. From each of these states, you select a simple random sample of 2 colleges or universities. Finally, from each of these 8 colleges or universities, you select a simple random sample of 20 undergraduates. Your final sample consists of 160 undergraduates.
Which type of sampling was used?
stratified random sampling
convenience sampling
simple random sampling
multistage sampling