When computing (m_1-m_2 )±t_(?/2) (s_(m_1-m_2 )), what is t_(?/2) when ? = .01, and one sample has 12 scores and the second has 16 scores?

A __________ reinforcer satisfies a basic survival need, like hunger or thirst

a. primary b. physiological c. positive d. secondary

An organism's complexity ___ with the number of its genes; it ___ with the amount of junk DNA

a. is correlated, is not correlated b. is not correlated, is correlated c. is correlated, has no relation d. None of the above