Premise:
"In other words, when a published article in a top journal presents evidence that its hypothesis is true, its hypothesis is probably false."
Hypothesis: Top journals don't have good ways to guarantee that the hypotheses of their articles are true.

it is not possible to tell

Premise:
"They always take out the key before leaving the room.""
Hypothesis: The same procedure is always used with the key on leaving the room.

yes

Premise:
"She had feigned an attack with barely more than her eyes."
Hypothesis: She pretended she was being attacked.
yes