A) Many people think that a national lobby's successful fight against gun control legislation is reflecting the will of a minority of Americans. In a sample of 3,200 people, 2,250 were in favor of gun...

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Extracted text: A) Many people think that a national lobby's successful fight against gun control legislation is reflecting the will of a minority of Americans. In a sample of 3,200 people, 2,250 were in favor of gun control legislation. Estimate the true mean of all Americans who are in favor of gun control legislation using a 94% confidence interval. Assume the population standard deviation is 490. (Round answer to 1 decimal) B) A study found that a 95% confidence interval for the mean u of a particular population was computed from a random sample of 1200 people and found it to be 10 4. Therefore, we may conclude: 1) That there is a 95% probability that u is between 6 and 14. 2) That there is a 95% probability that the true mean is true margin of error is 4. and a 95% chance the 3) That if we took many, many additional samples and from each computed a 95% confidence interval for u, approximately 95% of these intervals would contain u. 4) That there is a 95% probability that the true mean is + or - 10 units from the population mean with a margin of error of 4. 5) All are correct tions: On