In a randomly selected sample of 2237 US adults, 1754 identified themselves as people who use the Internet regularly while the other 483 indicated that they do not. In addition to Internet use, participants were asked if they agree with the statement ‘‘most people can be trusted.” The results show that 807 of the Internet users agree with this statement, while 130 of the non-users agree.

(a) Which group is more trusting in the sample (in the sense of having a larger percentage who agree): Internet users or people who don’t use the Internet?

(b) Can we generalize the result from the sample? In other words, does the sample provide evidence that the level of trust is different between the two groups in the broader population?

(c) Can we conclude that Internet use causes people to be more trusting?

(d) Studies show that formal education makes people more trusting and also more likely to use the Internet. Might this be a confounding factor in this case?