You plan to sample from the 32,008 undergraduate students enrolled at the Univer

Question

You plan to sample from the 32,008 undergraduate students enrolled at the University of Florida, to compare the proportion of black and white students who believe that racism is still a serious problem in the United States.

1. Suppose that you use random numbers to select students, but you stop selecting blacks as soon as you have 25, and you stop selecting whites as soon as you have 25. Is the resulting sample a simple radon sample? Why or why not?

2. What type of sample is the sample in (1)? What advantage might it have over a simple random sample?

Explanation / Answer

Obliviously this is NOT a simple random sampling, because after 25 we are curtailing the selection of the same race. In this scheme the researcher is supposed to have fixed the size of blacks in sample and that of whites in sample which is 25.

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