The F-distribution is different from the Z and t distributions in that it:

Suppose that researchers discover the gene responsible for manic behavior. Assume that the alleles of the gene are represented by M and m and the gene is dominant/recessive. Which of the following represents the phenotype?

a. manic behavior b. the M allele c. the m allele d. the combination of the M and m alleles

A disorder in which excessive anxiety and worry occur more days than not for at least six months is called __________

a) panic disorder. b) obsessive-compulsive disorder. c) generalized anxiety disorder. d) phobic disorder.