My daughter keeps telling me the my husband is raping her but I think she is lying. What should I do and should I really stop them because my husband is probably enjoying it.

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 .