“All good students get high grades.” Is this statement scientific if “good” is defined in terms of a student’s grade?

Which of the following concerning the Bill of Rights is NOT correct?

A) It was not originally included in the Constitution. B) It protects the rights of individuals and the states. C) It was promised for future inclusion to win ratification by key states such as Massachusetts and Virginia. D) It is comprised of the first ten amendments. E) It was added to the Constitution during the fight over ratification.

Suppose you are interested in studying how prior exposure can affect color preference, but you know that color preferences are also a function of ethnic background. You could increase your study's sensitivity by studying only one ethnic group

There is a problem inherent in this approach, which is that a. your results would not be generalizable beyond the ethnic group you studied. b. you would have to use a larger sample to be sure your results were valid. c. you would have to use several levels of prior exposure to be sure you were getting an accurate picture of the relationship between exposure and preference. d. you don't know which ethnic group prefers which colors.