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OpenStudy (anonymous):
A polling organization conducts a poll by making a random survey and is willing to accept a margin of error of 5 percent at a level of 95 percent. What should the sample size be?
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OpenStudy (kropot72):
It is necessary to know the population standard deviation, or at least the sample standard deviation, to enable the value of the sample size to be calculated.
OpenStudy (anonymous):
@kropot72 that's the only information given :/
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