The Pew Research Center Internet Project conducted a survey of 657 Internet users. This survey provided...

4.2 Ratings (879 Votes)

Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â xÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â =Â Â	591
sample size		nÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â =		657.0
sample proportionÂ Â Â Â pÌ‚	x/n=		0.9000

std errorÂ Â Â Â Â Â =Se	Â Â Â Â Â Â Â Â Â Â =âˆš(p*(1-p)/n) =	0.0117

for 95 % CI value of z=			1.96
margin of error E=z*std errorÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â =		0.0229
lower confidence bound=sample proportion-margin of error	0.8771
Upper confidence bound=sample proportion+margin of error	0.9229

Â Â 95% confidence interval =(0.877 , 0.923)

Â Â 95% confidence interval =(.634 , 0.706)

95% confidence interval =(0.522 , 0.598)

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