6. A researcher wants to compare the mean concentration of two medications considered biologically
equivalent, i.e., two medications that are able to produce the same therapeutic effect at the same level of
concentration in the blood. The group of individuals on medication one (
= 32) had a mean blood
concentration of 21.7 micrograms per milliliter with a standard deviation of 8.7 micrograms per milliliter.
The group of individuals on medication two (
= 32) had a mean blood concentration of 19.4 micrograms