When did the ratification of the Bill of Rights to the Constitution take place?

If all groups in an experiment have approximately the same mean, between-groups variance will be

A) large. B) small. C) equal. D) None of the above

Mr. Love, an assistant to Dr. Van Offer, was told that he needed to find empirical evidence. He has no clue what that means - what is the correct meaning?

A) data or evidence that ultimately can be tied to something that can be seen, touched, smelled, heard, etc. B) a list of food items C) unusual work practices D) evidence that is thrown together with no practical meaning.