Question
The table to the right shows the results of a survey in which 2558 adults from CountryA,1103 adults from CountryB, and 1078 adults from Country
The table to the right shows the results of a survey in which 2558
adults from CountryA,1103
adults from CountryB, and 1078
adults from Country C were asked if human activity contributes to global warming. Complete parts(a), (b), and(c).
(a) Construct a 90%confidence interval for the proportion of adults from CountryA who say human activity contributes to global warming.
(b) Construct a 90% confidence interval for the proportion of adults from CountryB who say human activity contributes to global warming.
(C) Construct a 90% confidence interval for the proportion of adults fromCountryC who say human activity contributes to global warming.
Adults who say that human activity contributes to global warming
CountryA 67% CountryB 90% CountryC 95%`
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