Question Help
The table to the right shows the results of a survey in which
2559 adults from Country A,
1118 adults from Country B, and
1077 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 Upper A
Country A
60%
Country Upper B
Country B
86%
Country Upper C
Country C
92%
(a) Construct a
99% confidence interval for the proportion of adults from
Country Upper A
Country A who say human activity contributes to global warming.