Premise:
"Both mags downplay his thuggishness."
Hypothesis: He is civilized.

no

Premise:
"Savings would be achieved if the combined costs of (1) examining the sample and (2) projected losses due to undetected errors on invoices not examined are less than the administrative cost of examining all invoices."
Hypothesis: Savings could be had if the sample was examined and errors are detected.

yes

Premise:
"He thought that without this type of research, requirements would cause a rebellion against practice changes."
Hypothesis: The research was expensive and took many years to complete for accurate results.
it is not possible to tell