In a Reason-Rupe poll, a random sample of people were asked, “Just a rough guess, what percent profit on each dollar of sales do you think the average company makes after taxes?” The results from 5...

In a Reason-Rupe poll, a random sample of people were asked, “Just a rough guess, what percent profit on each dollar of sales do you think the average company makes after taxes?” The results from 5 years ago and this year were recorded. Can we infer that the guesses this year are higher than they were 5 years ago?