A two-independent-groups experiment was conducted to study the effects of low versus high anxiety on people's desire to affiliate with others. (Assume the procedures were the same as those used in the two-group experiment by Schachter discussed in Chapter 7.) After the anxiety manipulation, each subject could elect to wait either in an empty room or a room where another person was waiting. The data are shown in the following 2 x 2 contingency table: Desire to Affiliate Yes No Low anxious subjects High anxious subjects 10 20 20 10

a. What is the Ho in this experiment?

b. What is the researcher's H?

c. Analyze the data using a x. Can the researcher reject the null hypothesis at P

b. Follow the same procedure as in 7a, but assume that the researcher has now pre- dicted that the massed practice group will make more errors.