Melina works on the campaign of a political candidate. She suspected that voters in district were more likely to support her candidate than voters in district . She obtained separate random samples of voters from each district. Here are the results: Supports candidate?District District Yes No Total Melina wants to use these results to construct a confidence interval to estimate the difference in the proportion of voters in these districts who support her candidate . Assume that all of the conditions for inference have been met. Which of the following is a correct confidence interval based on Melina's samples?