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July 1, 2015

Homework Help: statistics

Posted by Rachel on Saturday, February 28, 2009 at 2:36pm.

a survey is to be conducted to determine the proportion of U.S. voters who support additional aid to African nations to fight poverty and HIV/AIDS. Of the proposed sammple sizes which is the smallest that will guarantee a margin of error of no more than 4% for a 90% confidence level?
a)225
b)325
c)425
d)525
e)625

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