Same-sex marriage: In a recent ABC News/Washington Post poll, 1280 adults nationwide answered the question, "Overall, do you support or oppose allowing gays and lesbians to marry legally?" Of the respondents, 437 support same-sex marriage. What is the 90% confidence interval for the proportion of all American adults who support same-sex marriage? (0.32, 0.363) O (0.315, 0.367) (0.328, 0.355) O (0.307, 0.376)