According to a 2010 report om the american council on education emales make up 57% ofthe college population n the united states. students in a statistics class a south texas college want to determine the proportion of emale students a s 。 they select a random sample of 135 stc students and find that 72 are female, which is a sample proportion of 72 135 0.533. so 53.3% of the students in the sample are female. what can they conclude about the proportion of females at the college? how confident can they be in their estimate? to answer these questions, we need to find a confidence interval. estimate the population proportion within approximately 2 standard errors. e-2.pl-d and for the confidence interval use maginal of error your task: 1. find marginal of error 2. find confidence interval 3. conclusion: we are 95 confident that the proportion of all stc students who are female is betiween and