By the early thirties, _____ percent of U.S. young adults live on their own

Winnie suddenly left the bar when Adam asked for her number. She realizes afterward that she must really have disliked Adam because of the way she behaved. By inferring her attitude from her observation of her behavior, she has a(n) ________ attitude

a. affectively based b. behaviorally based c. cognitively based d. explicit

A professor presents a test in black ink for half the students and in red ink for the other half, and compares the students' test scores. What is the dependent variable in this experiment?

a. The number of students in each group b. The color of ink on the test c. The students' test scores d. The difficulty of the test