The table to the right shows the results of a survey in which 2582 adults from Country A
The table to the right shows the results of a survey in which 2582 adults from Country A, 1119 adults from
Country B, and 1098 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
67%
Country B
89%
Country C
95%
(a) Construct a 90% 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.)
B. Construct a 90% 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.)
C. Construct a 90% 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.)
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