Assume that, for the following data: Massed Practice Distributed Practice S1 6 S1 5 S2 4 S2 3 S3 3 S3 2 S4 5 S4 2 S5 2 S5 3 the Morse code researcher did not match the subjects. Which statistical test would be appropriate? Carry out the test and evaluate the outcome at the .05 level and a nondirectional prediction.