Premise:
"Research suggests that individuals who are not financially literate tend to save less."
Hypothesis: Most financially illiterate people are middle class whites.

it is not possible to tell

Premise:
"The exposure comes from chemical residue on plants in farm fields and from pesticide drift, such as the incidents lettuce workers described, according to the survey."
Hypothesis: The exposure comes from chemical reside on plants in fields.

yes

Premise:
"It was rebuilt in 629 but partially destroyed by an insane Egyptian caliph in the early 11th century."
Hypothesis: The Egyptian caliph destroyed all the monuments.
it is not possible to tell