In a survey of 2255 randomly selected US adults (age 18 or older), 1787 0f them

Question

In a survey of 2255 randomly selected US adults (age 18 or older), 1787 0f them use the Internet regularly. Of the Internet users, 1054 use a social networking site, 1 Find a 95% confidence interval for each of the following proportions. 1 Hampton, K., Goulet, L., Rainie, L., and Purcell, K., "Social Networking Sites and Our Lives, " Pew Research Center, June 16, 2011. (a) Proportion of US adults who use the Internet regularly. Round your answers to three decimal places. The 95% confidence interval is to (b) Proportion of US adult Internet users who use a social networking site. Round your answers to three decimal places. The 95% confidence interval is to

Explanation / Answer

a) Lower limit = 0.775

Upper limit = 0.809

b) Lower limit = 0.567

Upper limit = 0.612

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