1. an advertisement claims that three out of five dentists prefer a particular type of
toothpaste. after researching the study, you find that the toothpaste company paid for it.
why should you be skeptical of the advertisement's claims?
o because the dentists are showing experimental bias
because only dentists were involved in the study
o because the organization that paid for the study is biased
o because you do not like the toothpaste being advertised