In a sample of 500 Canadians, 275 say they would rather retire in the US than in Canada. Calculate the 95% confidence interval for the true proportion of Canadians who would rather retire in the US

In a recent poll, 430 people were asked if they liked dogs, and 54% said they did. Find the margin of error of this poll, at the 90% confidence level.

In a recent poll, 150 people were asked if they like dogs, and 40% said they did. Find the margin of error for this poll, at the 99% confidence level. Give your answer to four decimal places if possible.

You want to determine if the proportion of people who will vote for the president next year has increased due to current events. You take a simple random sample of 1100 individuals and find that 897 of them said that they will be voting in the election. Construct a 95% confidence interval, by hand (mean using the equations in the section). Show your work. And then write the conclusion to the confidence interval (follow the examples in the modules) in a complete sentence.