Premise:
"For purposes of city and rural delivery cost analysis, we present (1) a comparison using the actual labor costs of the two crafts, and (2) a comparison using the average labor costs of all Postal Service collective bargaining employees."
Hypothesis: They are comparing costs of labor for Postal employees.

yes

Premise:
"The most picturesque street in the old town, across the railway tracks north of the Fort (an area once known as Black Town ), is Armenian Street."
Hypothesis: Music and dance are fixtures on Armenian Street.

it is not possible to tell

Premise:
"Clearly, some investors would break from the pack as new information became public and others were not reacting."
Hypothesis: Some investors would break from the pack as new information became public and others were not reacting.
yes