Premise:
"Most people Prudie has observed tipping taxi drivers tack on a couple of bucks, no matter what the meter."
Hypothesis: The vast majority of people tip taxi drivers 20 percent of their fare.

no

Premise:
"Both these streets lead to the upper level of the George IV Bridge."
Hypothesis: The streets go to the upper level of the bridge.

yes

Premise:
"Not all graduates will be able to scrounge for the years it may take to build a clientele, nor should they."
Hypothesis: Graduates are presented with a clientele with no effort on their part.
no