Question

A research center project involved a survey of 846 internet users. It provided a variety of statistics on internet users.

a) The sample survey showed that 95% of respondents said the internet has been a good thing for them personally. Develop a 95% confidence interval for the proportion of respondents who say the internet has been a good thing for them personally. (Round your answers to four decimal places.)

b) The sample survey showed that 72% of internet users said the internet has generally strengthened their relationship with family and friends. Develop a 95% confidence interval for the proportion of respondents who say the internet has strengthened their relationship with family and friends. (Round your answers to four decimal places.)

c) Fifty-eight percent of internet users have seen an online group come together to help a person or community solve a problem, whereas only 25% have left an online group because of unpleasant interaction. Develop a 95% confidence interval for the proportion of internet users who say online groups have helped solve a problem. (Round your answers to four decimal places.)

Answer 1

n = 846

A.

= 0.95

Confidence Interval:

[0.9353, 0.9647]

B.

= 0.72

Confidence Interval:

[0.6897, 0.7503]

C.

= 0.52

Confidence Interval:

[0.4863, 0.5537]

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