A learning researcher is interested in the effectiveness of hernew memory enhancement program. To test this program, she has 15students learn a list of 50 words. Memory performance is measuredusing a recall test. After the first test, these same students areinstructed as to how to use the memory improvement program and thenlearn a second list of 50 different words. Memory performance isagain measured with the recall test. If you wanted to test thehypothesis to see if the memory program actually improves memory,what would be the appropriate analysis? What would be the null andalternative hypotheses for this test? Would the alternativehypothesis be one-tailed (directional) or two-tailed(nondirectional)? Why?
