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1. In random exit polling for the 2004 presidential election, 700 out of 1200 SC voters said they voted in favor of Proposal 1. Find

1. In random exit polling for the 2004 presidential election, 700 out of 1200 SC voters said they voted in favor of Proposal 1.

  • Find a 95% Confidence Interval for the proportion of ALL SC voters who voted for Proposal 1.
  • Based on our exit polling, can we go on television and declare that Proposal 1 has passed in SC?

2. A sociologist wanted to determine the percentage of residents of America that only speak English at home. What size sample should be obtained if she wishes her estimate to be within 3 percentage points with 95% confidence assuming she uses the estimate obtained from the Census 2000 Supplementary Survey of 82.4%?

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