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Mathematics
Identify the kind of sample that is described.
A sports columnist makes a list of email addresses of registered readers. He generates 150 random numbers and samples the email addresses on his list that correspond to these numbers about the potential basketball lockout.
The sample is a sample.
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The kind of sample that is described is a simple random sample.
In a simple random sample, each member of the population has an equal chance of being selected, and the selection of each member is independent of the selection of others. In this case, the sports columnist generates 150 random numbers and selects the corresponding email addresses from his list to ask about the potential basketball lockout.
This method assures that every email address has an equal likelihood of being selected and the selection of one email address does not influence the likelihood of another email address being selected.
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