A question posted on thegamefaqs.com websiteon August 1^st, 2011, askedvisitorsto the site, "Do you have an active social life outside the Internet?". 22% of the 55, 581 respondents said "No" or "Not really, most of my personal contact is online."

i. What kind of sampling is this?

ii. How much confidence would you place in using 22% as an estimate of the fraction of people who have no social life outside the Internet. Explain/Justify your answer.