Melatonin is a _______________ that causes you to feel sleepier when it increases in the bloodstream

Which of the following assumptions are common to all parametric statistics?

a. There are no common assumptions. b. The population of dependent scores forms a normal distribution, regardless of what kind of scores they are. c. The dependent scores must be interval or ratio scores, regardless of whether the population of scores forms a normal distribution. d. The population of dependent scores (a) must be interval or ratio scores and (b) must form an approximately normal distribution.

Which of the following drugs is used to treat depression?

A. Valium B. Prozac C. Ritalin D. lithium