Attitude scales constructed by Likert's method are just as reliable as those constructed by

Approximately what percent of American adolescents get no exercise at all?

A) 23 B) 14 C) 6 D) 1

Among young adolescents, about 30% of _____ and 50% of _____ are "latchkey teens," unsupervised during the after-school hours

A) girls; boys B) Whites; Blacks C) middle class teens; poor teens D) Blacks and Hispanics; Whites