You are interested in comparing the level of stress among graduate students in a psychology

program to the stress among graduate students in a business program. You give them a scale

with range of 0 (no stress) to 7 (extremely stressed) and obtain the following data:

Table B.1

Psychology Business

1 6

5 6

0 2

4 3

2 1

7 7

a. What are the independent and dependent variables for this study?

b. State the null hypothesis and research hypothesis.

c. Can you reject the null hypothesis at alpha = 0.05?