A TV reporter is looking at polling for the coming presidential election. He wants to determine if the polling shows that one candidate or the other has a true lead on the other candidate.Which statistical method would help determine if one candidate has a true lead in the election?

Group of answer choices

Regression with poll results as the dependent variable

Compare the sample mean of each

Regression with poll results as the independent variable

Find a confidence interval for each candidate's poll results and check that they do not overlap

Use a confidence interval based on last year's polling results