Premise:
"um yeah up here you got to wait till August August till the water warms up well it's not that bad but it's still pretty chilly"
Hypothesis: It's still a mite chilly, but not too bad.

it is not possible to tell

Premise:
"A figure stopped at the bluff's edge leading a horse."
Hypothesis: Someone and a horse stepped up to the edge.

yes

Premise:
"That assumption may or may not be correct."
Hypothesis: That assumption can only be correct.
no