Variable A is hours of studying per week.

Variable B is anxiety during exams.

a. What is the name of the variable you will manipulate?

b. What is the name of the variable you will measure?

c. Assume you were going to use random processes to choose participants from the population you are interested in and to put them in groups. Use the proper terminology to describe the process of choosing and putting participants into groups. In the process, explain what it means to do each of these things randomly.

d. Would you expect sampling error if you chose participants for your study randomly? Why or why not?