Listed below are blood groups of o, a, b, and ab of randomly selected blood donors (based on data from the greater new york blood program). o a b o o o o o ab o o o o b o b o a a a o a a b ab a b a a a a o a o o a a o o a o o o o a a a a a ab identify the frequency of the blood group o

The answer to this is 22, confirmed by gradpoint

The independent variable is the type of music.the dependent variable is the pulse rate.the intervening variable is the age of the subject.if the mother does not like rock, her pulse is likely to not increase.the same might be true for the sister.the friend may like rap and gets excited.to establish cause/effect relationship, all of the subjects must be consistent.hope i .

Cause its being chemically applied?