The table to the right shows the results of a survey in which 2558 adults from C
ID: 3367890 • Letter: T
Question
The table to the right shows the results of a survey in which 2558 adults from Country? A, 1104 adults from Country? B, and 1060 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 60 ?% Country Upper B 87 ?% Country Upper C 93 ?% ?(a) Construct a 90 ?% confidence interval for the proportion of adults from Country Upper A who say human activity contributes to global warming. left parenthesis nothing comma nothing right parenthesis ?(Round to three decimal places as? needed.) ?(b) Construct a 90 ?% confidence interval for the proportion of adults from Country Upper B who say human activity contributes to global warming. left parenthesis nothing comma nothing right parenthesis ?(Round to three decimal places as? needed.) ?(c) Construct a 90 ?% confidence interval for the proportion of adults from Country Upper C who say human activity contributes to global warming. left parenthesis nothing comma nothing right parenthesis ?(Round to three decimal places as? needed.)
Explanation / Answer
The statistical software output for this problem is:
One sample proportion summary confidence interval:
p : Proportion of successes
Method: Standard-Wald
90% confidence interval results:
90% confidence interval results:
90% confidence interval results:
Hence,
90% confidence intervals will be:
For A: (0.584, 0.616)
For B: (0.853, 0.887)
For C: (0.917, 0.943)
Proportion Count Total Sample Prop. Std. Err. L. Limit U. Limit p 1534.8 2558 0.6 0.0096862428 0.58406755 0.61593245Related Questions
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