Asurvey of 448 Cook County residents is conducted, in which 311 of the respondents had shopped online in the last three months. What proportion of the respondents had shopped online? Give the proportion as a fraction. Give the proportion as a percent, rounded to the nearest tenth of a percent. % In this problem, all of the conditions are met to construct a confidence interval using the method implemented on our calculator. K Use your calculator to construct a 95% confidence interval for the proportion of all Cook County residents who had shopped online in the three months before the study. In words, in the context of this problem, explain what this confidence interval means. (Note: This part will be hand-graded. The computer will automatically mark it "wrong," but you will receive credit for a correct answer when the test is hand-graded after the due date.) Question Help: 8 Message instructor l Add wing l > Next Question '1