The table shows results of survey in which 2552 adults from Country A , 1104 adults from Country B, and 1094 adults from Country C were asked if human activity contributes to global warming. Complete parts a, b, and c.

Adults who say that human activity contributes to global warming.

Country A 68%
Country B 88%
Country C 93%

Create the 95% confidence interval for proportion of adults from Country A who say human activity contributes to global warming.

Create 95% confidence interval for proportion of adults from Country B who say human activity contributes to global warming.

Create 95% confidence interval for proportion of adults from Country C who say human activity contributes to global warming.