Chapter 9 - Inferences Based on Two Samples - Exercises 9.1 - 9.29 - Applying the Concepts - Basic - Page 423: 9.13a

Researchers are interested in measuring the difference of mean scores of a sample of 1,516 first-grade students in classrooms that used educational software as compared to a sample of 1,103 first-grade students in classrooms that did not use the technology. Mathematically: $µ_{1} - µ_{2}$

Work Step by Step

As above

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