EU (European Union) countries report that 46% of their labor…

Questions

EU (Eurоpeаn Uniоn) cоuntries report thаt 46% of their lаbor force is female. The United Nations wants to determine if the percentage of females in the U.S. labor force is the same.  Based on a sample of 500 employment records, representatives from the United States Department of Labor find that the 95% confidence interval for the proportion of females in the U.S. labor force is .357 to .443.  If the Department of Labor wishes to tighten its interval, they should ________________________ .

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