25. A 2012 Gallup poll asked a random sample of 120 American adults whether theythought the news media exaggerate the seriousness of global warming. Theproportion who responded “No" was 59.2%. Is this good evidence that majority ofAmerican adults do not believe the news media exaggerate the seriousness ofthe global warning?a) Set up appropriate null and alternative hypothesis to answer the abovequestion.b) Calculate the value of the test statistic.c) Is the data significant at the 5% level (alpha = 0.05)? Explain why or why not.%3Dd) State your conclusion in the context of the question above. 4) A firm would like to estimate the mean age of all people in the civilian labor force. What sizesample would be required to estimate the mean age of all people in the civilian labor force accurateto within 0.75 year of the estimate at the 95% confidence level, given that o = 15.26 years?

Name: 25. A 2012 Gallup poll asked a random sample of 120 American adults w
Uploaded: 2024-03-20T07:07:00.000Z
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Description: 25. A 2012 Gallup poll asked a random sample of 120 American adults whether theythought the news media exaggerate the seriousness of global warming. Theproportion who responded “No" was 59.2%. Is this good evidence that majority ofAmerican adults do