Premise:
"yeah that they from what i understand that uh notices went out to all of the sites"
Hypothesis: My understanding is that notices have been sent to all affected sites.

yes

Premise:
"I am quite sure he had no idea of what you meant." I had expected Poirot to be disappointed; but, to my surprise, he replied that that was as he had thought, and that he was very glad. "
Hypothesis: I'm positive he knew exactly what you meant.

no

Premise:
"On a clear day, from the new lighthouse (145 steps) you can see 100 km (62 miles) or more."
Hypothesis: You can't see much from the top of the new lighthouse.
no