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Global Warming. A Pew Research Center poll surveyed 1708 randomly selected adults who were asked whether “global warming is a problem that requires immediate government action.” Results showed that 939 of those surveyed indicated that immediate government action is required. A news reporter wants to determine whether these survey results constitute strong evidence that the majority (more than 50%) of adults believe that immediate government action is required.
- a. What is the best estimate of the proportion of adults who believe that immediate government action is required?
- b. Construct a 95% confidence interval for an estimate of the proportion of adults believing that immediate government action is required.
- c. Is there strong evidence supporting the claim that the majority of adults are in favor of immediate government action? Why or why not?
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EBK STATISTICAL REASONING FOR EVERYDAY
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