researchers are investigating the effect of ph level in water on the breeding habits of the moon jellyfish. as part of a laboratory experiment, they will randomly assign one of three treatments, low ph, medium ph, or high ph, to the water in the tanks that hold the jellyfish.

what am i trying to do? solve?

answer:

i havent taken the psat, but i have the sat, make sure to bring some snacks, because youre in there forever, 2 sharp number two pencils, an sat approved calculator, and maybe a jacket.   your phone and any books will be taken up, so don't try to bring them(but they will be given back at the end of the testing).   good luck!   i hope you do well!