Dr. Passaglia and Dr. Jaroszeski each gave their Research Design, Methods, and I
ID: 3226912 • Letter: D
Question
Dr. Passaglia and Dr. Jaroszeski each gave their Research Design, Methods, and Interpretation course sections the same test. The results are below in table form. They are debating about which section performed better on the test. Dr. Jaroszeski asserts that the mean scores from the two sections are different. Dr. Passaglia is certain that there is no difference. What test should they use to resolve the debate, what is the value of the computed test statistic, and are the mean test scores statistically different?
one tailed t-test, 1.21, statistically different
² test, 7.92, statistically different
two tailed t-test, 1.21, not statistically different
paired t-test, 1.65, not statistically different
Mean Score Standard Deviation Number of students Dr. Passaglia 72.36 12.5 44 Dr. Jaroszeski 75.29 14.5 140Explanation / Answer
What test should they use to resolve the debate, what is the value of the computed test statistic, and are the mean test scores statistically different?
Answer : two tailed t-test, 1.21, not statistically different
Since the claim is that there is no difference so we use two-tailed test.
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