The table to the right shows the results of a survey in which 2560 adults from country a, 1138 adults from country b, and 1071 adults from country c were asked if human activity contributes to global warming. Construct a 95 percent confidence interval for the proportion of adults from country a who say human activity contributes to global warming.

Question HelpAdults who say that humanactivity contributes to globalwarmingCountry A67%Country B89%Country C95%

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