Premise:
"the costs and difficulties of the ED setting, the relative efficacy and cost of booster sessions is another important issue deserving further research."
Hypothesis: The cost of booster sessions is negligible, so it can be ignored.

no

Premise:
"Conversation often took the form of elegant exchanges of improvised verse."
Hypothesis: Improvised verse was frequently a feature of conversation.

yes

Premise:
"She gave you no hint as to what that matter might be? 54 "Unfortunately, no.""
Hypothesis: She didn't tell you what was wrong with her after the party?
it is not possible to tell