Of 375 surveyed freshman college students, 90 said they have passport. Suppose this constitutes a random sample. (a) Give a 90% Confidence interval for the true proportion of students who have a passport an interpret it in the context of this problem. (b) Give a 99% Confidence interval for the true proportion of students who have a passport and interpret it in the context of this problem.. (c) How big of a sample should we take if we wish to be within 5% of the true proportion of all citizens (not just college students) with 99% confidence? I assume we have no idea how many people actually have passports