Question

After collecting data from the 18 mice in the sample, the research team conducted a randomization test for the difference in two means. In the samples, the “Light” group gained an average of 6.732 grams and the “Dark” condition gained an average of 4.114 grams. The pooled standard deviation was 2.451 grams. A p value of 0.018 was computed using StatKey.

1. Using the alpha level you selected in part e, are the results statistically significant? Explain why or why not. [5 points]

2. Compute Cohen’s d. Remember to show all work using the equation editor. [10 points]
3. Are the results practically significant? Explain why or why not. [5 points]

Answer 1