Question: Express the confidence interval (78.1 % , 89.5 % ) in the form of p + E.A Gallup suryls-yr based on telephone and face-tovface interviews


Express the confidence interval (78.1 % , 89.5 % ) in the form of p + E.A Gallup suryls-yr based on telephone and face-tovface interviews with 4,22!) adults in China, aged 15 and older suggests that 3% smoke regularly or occasionally. The following is also noted "one can say with 95% confidence that the maximum margin of sampling error is 1.4 percentage points". Which of the following is true based on the results of this survey! 0 We are 95955 confident that 1?.6 if: to 32.4 if; of all Chinese adults smoke. D If the sample size was larger, the margin of error would be larger as well. D If we were to randomly sample another group of 4,23) Chinese adults we would find that exactly 345% of them smoke as well. D Exactly 30% of all Chinese adults smoke. D We are 95955 confident that 15.2% to 34.3% of all Chinese adults smoke
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