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Mathematics, 15.04.2020 02:02 gabbym39077
In order to select a sample of undergraduate students in the United States, a simple random sample of four states is selected. From each of these states, a simple random sample of two colleges or universities is then selected. Finally, from each of these eight colleges or universities, a simple random sample of 20 undergraduates is selected. The final sample consists of 160 undergraduates. What sampling technique is being used? Simple random sampling Stratified random sampling Multistage sampling Convenience sampling
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