A recent poll found that 60% of Americans support raising taxes on incomes above $250,000. The details for the poll results stated that the "margin...

A recent poll found that 60% of Americans support raising taxes on incomes above $250,000. The details for the poll results stated that the "margin of sampling error is plus or minus 3.5 percentage points." Calculate the 95% confidence interval for support of that policy. Interpret the 95% confidence interval in words. A prior poll had shown 55% of Americans supporting the policy. Are the results of the two polls statistically significantly different?