Premise:
"probably they don't have birth control"
Hypothesis: They are taking birth control.

no

Premise:
"Of the 420 animal species found in the area, only one human fossil has been the 9,000-year-old La Brea Woman."
Hypothesis: We have found only one human fossil in the area.

yes

Premise:
"model will help inform agencies' efforts to respond to the administration's management initiatives, such as getting to green on OMB's management scorecard and using the tools developed by OPM."
Hypothesis: Administration is in charge of general management.
yes