A website asked, as their question of the day to which visitors to the site were

Question

A website asked, as their question of the day to which visitors to the site were invited to respond. Do you ever read the end-user license agreements when installing software or games?" Of the 96,423 respondents, 66.25% said they never read those agreements a fact that software manufacturers might find important. Complete parts a and b. What kind of sample was this? Cluster sample Multistage sample Stratified sample Systematic sample Simple random sample Voluntary response sample How much confidence would you place in using 66.25% as an estimate of the fraction of people who don't read software licenses? There should be full confidence because there are a large number of respondents. There should be no confidence because only those who choose to respond arc counted. There should be some confidence because the large number of respondents overcomes some of the bias in the survey

Explanation / Answer

a). Voluntary response sample

b)

B. There should be no confidence because only those who choose to respond are counted.

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