The following table shows the results of a 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%
Construct a 95% confidence interval for the proportion of adults from Country A who say human activity contributes to global warming. ( ),( ). Round to three decimal places as needed.
Construct a 95% confidence interval for the proportion of adults from Country B who say human activity contributes to global warming. ( ),( ). Round to three decimal places as needed.
Construct a 95% confidence interval for the proportion of adults from Country C who say human activity contributes to global warming. ( ),( ). Round to three decimal places as needed.