CHAPTER 1

The square root of (SEM1)2 + (SEM2)2. The square root of (SEM1)2 − (SEM2)2. Answer: c. Narrative: Classes 1 and 2. Suppose a 95% confidence interval for the difference in test scores between Class 1 and Class 2 (in that order) is the following: 9 +/− 2. These results were based on independent samples of size 100 from each class. ................
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