A Pew Research Center poll of 1007 randomly selected adults showed that 85% of respondents know what Twitter is. The sample results are n = 1007 and pˆ= .85. Show your work
- 1.Find the margin of error E that corresponds to a 95% confidence level.
- 2.Find the 95% confidence interval estimate of the population proportion p.
- 3.Based on the results, can we safely conclude that more than 75% of adults know what Twitter is?
- 4.Assuming that you are a newspaper reporter, write a brief statement that accurately describes the results and includes all of the relevant information.
