Premise:
"i'll try bye"
Hypothesis: I'll try to do it by tonight.

it is not possible to tell

Premise:
"They should be addressed to Eleanor Chelimsky at 202-275-1854."
Hypothesis: Eleanor Chelimsky will be the intended address.

yes

Premise:
"The answer is that the Internet stands to expand the market as a whole more than enough to compensate them for having to compete with each other."
Hypothesis: The majority of their sales are on the internet.
it is not possible to tell