An advertiser of a certain brand of aspirin (let’s call it Brand B) claims that it is the preferred painkiller for headaches, based on the results of a survey of headache sufferers. The choices given to respondents were: Tylenol, Extra-strength Tylenol, brand B aspirin, Advil.
a. Is this an open-or closed-form question? Explain.
b. Comment on the variety of choices given to respondents.
c. Comment on the advertiser’s claim.