A magazine article conducted a survey of 897 people in the Bay Area and found that 41% of the population believe that a large earthquake will hit San Francisco by the end of the year. In the accompanying dialogue, the article states, we are 95% confident that the true proportion of people in the Bay Area who believe that a large earthquake will hit San Francisco by the end of the year lies between 35% and 47% . What does 95% represent in the article