Premise:
"The number of possible deliveries (which ranges from 670 to 411) is dependent on route terrain."
Hypothesis: Often times, people who have less deliveries are people who have to go off road to get to their destination.

it is not possible to tell

Premise:
"In the precincts of the American left that still dream of Fidel and Che in the Sierra Maestra, Rieff's book was greeted with murmurings of disapproval--the kind of murmurings that had greeted Sontag's famous Town Hall declaration of the moral equivalence of communism and fascism some years before."
Hypothesis: 70% of the American left like Fidel and Che.

it is not possible to tell

Premise:
"Instead of going to London, however, the Sinn F??in members set up Dail ?ireann in Dublin and sparked the War of Independence."
Hypothesis: The war of Independence was sparked by the members.
yes