Premise: You can't see his face because the mask covers it, but as you walk past him on your way out you notice his hands there.

Hypothesis: While he covered his hands with gloves, he left his face exposed.
Answer: no

Premise: Somehow the whole scene seemed unreal.

Hypothesis: The whole scene seemed somehow unreal.
Answer: yes

Premise: When researchers describe case studies as using qualitative data, they usually mean the thick description.

Hypothesis: Qualitative data is less likely to be quoted in research papers than quantitative data.
Answer: it is not possible to tell

Premise: A recent test was particularly effective because it involved a comprehensive simulation of a real disaster.

Hypothesis: A recent test involved a simulation of a disaster
Answer: yes