The results of a survey in which 2566 adults from Country? A, 1100 adults from Country? B, and 1093 adults from Country C were asked if human activity contributes to global warming.
Adults who say that human activity contributes to global warming
Country A-68?% Country B-89?% Country C-95?%
?1. Construct a 99?% confidence interval for the proportion of adults from Country A who say human activity contributes to global warming.
2. Construct a 99% confidence interval for the proportion of adults from Country B
3. Construct a 99% confidence interval for the proportion of adults from Country C