A senator wishes to estimate the proportion of the united states voters who favor abolishing the electoral college. how large a sample is needed in order to be 90% confident that the sample proportion will not differ from the true proportion by more than 2%?
A senator wishes to estimate the proportion of the united states voters who favor abolishing the electoral
college. how large a sample is needed in order to be 90% confident that the sample proportion will not differ from the true proportion by more than 2%?
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