An article in the Chicago Tribune reported that in a poll of residents of the Chikago suburbs, at that their trac t ion improved during the past year. The following statement is from the atide: "The findings of the Tribune pall are based on interviews with 30 randomly selected suburtan t s. The sample included suburban Cock County plus Duage, Kare, Lake Money, and will counties in a sample of this store can say with certainty that results wil der by no more than 3% from results obtained it all residents had been included in the pol vesti a rgumento justify the daim that the timate of is within of the true proportion of redents who feel that the ancial situation improve Round your margin of error to four decimal places.) The margin of error for a confidence interval with the given are proportion and ovn samlee 1046 x 35 x which is aproximately 3% as stated