According to the text, about what percent of retired U. S. adults over age 65 rely on Social Security as virtually their only source of income?

When the within sum of squares is relatively large, then the shape of the

sampling distribution is necessarily a. leptokurtic b. platykurtic c. mesokurtic d. none of these

Aggressive models teach aggressive behavior by all of the following except

a. teaching observers how to perform the aggressive act. b. fostering positive attitudes toward aggression. c. allowing observers to construct aggressive scripts. d. increasing the frustration experienced by observers.