What is a major problem with simple random sampling?
A) The researcher needs a list of all the members of a population, which is difficult to obtain for a large population.
B) The researcher needs to contact all the people in the population, which would be difficult for a large population.
C) The sample usually over-represents certain segments of the population.
D) There is a systematic bias that leads to persons with certain characteristics having a higher probability of being selected.
Answer: A
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