A researcher is interested in people's reactions to having their personal space violated by strangers. He stands at 3 inches, 1 foot, 1.5 feet, 2 feet, and 3 feet away from people, five people per distance, and then has each of the 25 people rate how comfortable or uncomfortable they are on a scale from 1 to 7. one-way repeated-measures ANOVA one-sample z O Kruskal-Wallace H O multiple regression