You Have Just Completed an Experiment in Which Different Subjects

Multiple Choice

You have just completed an experiment in which different subjects were randomly assigned to an experimental and a control group. Your dependent variable was the number of errors made on a memory test. The most appropriate parametric statistic for your data is the:

A) t test for independent samples.
B) t test for correlated samples.
C) z test for proportions.
D) All of the answers are correct.