Premise:
"sounds like something i should do"
Hypothesis: That sounds like something I need to do.

yes

Premise:
"This area is great for people-watching, but to eat here it helps to have a generous expense account."
Hypothesis: The restaurant, which is on the top of a building, is worth the price.

it is not possible to tell

Premise:
"Perhaps that thought crossed his mind because Hunt Rennie stood by the fireplace moving the toe of his boot back and forth across a smear of gray powder."
Hypothesis: Hunt stood by the fireplace while thinking.
yes