Some of the assigned chapters seem to discuss hypothesis testing and
regression: techniques that seem applicable to the third and second
problems in the assignment, respectively. Do you think they just want a
general guess, based on the appearance of the distributions, or
something statistically rigorous and quantified?
I've found, in general, that the quantitative methods course veers
disturbingly between the exceptionally general and the unnecessarily
specific. Which they expect for the assignment, I don't really know.