So for statistics I've been given a dataset and I have to formulate a question, null & alt hypothesis that would be relevant to the data, and than I would have to do operations on my dataset to figure it out, I'm not very original at the moment so I wish to ask you for a research question etc.

This is the data that i've been given, 235 rows:

Primate species (7 different old world monkeys)
Sex (f/m)
Skull height (mm)
Skull width (mm)
Skull length (mm)
Orbital height (mm)
Cranial capacity (cm3)