Here is a premise:
Statutory COOs would differ from-but hopefully complement-the roles often assumed by the current Deputy Secretaries in assisting the Secretaries in executing the administration's policy and program agenda and achieving an agency's mission.

Here is a hypothesis:
There are many roles the COOs have but none differ from the roles assumed by the current Deputy Secretaries.

Is it possible to conclude that if the premise is true, then so is the hypothesis?
no