About what percent of people age 65 and older live in poverty?

Recall that Harold Kelley (1950) told some college students that their guest lecturer was a warm person, and others that he was a cold person

The visitor then lectured for twenty minutes. After the lecture, those students who expected the lecturer to be warm a. rated him higher and participated more in class discussion than those who expected him to be cold. b. rated him higher but did not talk in class any more than those who expected him to be cold. c. participated in class more than those who expected him to be cold, but did not rate him any differently. d. and those who expected him to be cold did not differ in their assessments, since they both saw the same person.

The Spearman r should only be used to test the hypothesis of

a. difference b. association c. equivalence d. none of these