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Confidence interval for the proportion of adults

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Reference no: EM132144134

The table to the right shows the results of a survey in which 2575 adults from Country? A, 1126 adults from Country? B, and 1072 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 warning:

Country A= 64%

Country B= 89%

Country C= 94%

?(a) Construct a 90?% confidence interval for the proportion of adults from Country Upper A Country A who say human activity contributes to global warming.

Reference no: EM132144134

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