Please help.

CalifJim

anonymousOne last confirmation, I think (that) he would have helped her.
Is this sentence a complete sentence without any implied if clause or conditional?

Yes.

anonymousAnd this sentence basically means I am not sure whether he helped or not, correct?

Yes. "I'm not sure, but I'm inclined to believe it."

CJ

I think (that) he would have helped her.

Can I just say the use of bold would have about certainty rather than hypothetical?