The Pew Research Center Internet Project conducted a survey of907 Internet users. This survey provided a variety of statistics onthem.
If required, round your answers to four decimal places.
| (a) | The sample survey showed that 90% of respondents said theInternet has been a good thing for them personally. Develop a 95%confidence interval for the proportion of respondents who say theInternet has been a good thing for them personally. |
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| (b) | The sample survey showed that 67% of Internet users said theInternet has generally strengthened their relationship with familyand friends. Develop a 95% confidence interval for the proportionof respondents who say the Internet has strengthened theirrelationship with family and friends. |
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| (c) | Fifty-six percent of Internet users have seen an online groupcome together to help a person or community solve a problem,whereas only 25% have left an online group because of unpleasantinteraction. Develop a 95% confidence interval for the proportionof Internet users who say online groups have helped solve aproblem. |
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| (d) | Compare the margin of error for the interval estimates in parts(a), (b), and (c). How is the margin of error related to the sampleproportion? |
| The margin of error - Select your answer-increasesdecreasesItem 7 as p gets closer to .50. |
