Premise:
"Third, we would never allocate fact finding to 12 randomly selected individuals whose major qualification is that they know nothing about the matter in dispute."
Hypothesis: They were curious about the findings.

it is not possible to tell

Premise:
"Some critics argue Pfitzner has been unfairly ignored because of his friendship with Hitler, and urge revision."
Hypothesis: Pfitzner had a friendship with Hitler that may have been ignored.

yes

Premise:
"No one would dream the picture had ever been tampered with."
Hypothesis: They knew that someone had tempered with the picture.
no