Do learning results vary by the different background sounds for a constant background sound, an unpredictable sound, and no sound at all? A researcher randomly divides twenty-seven students into three groups of nine. All students study a passage of text for 30 minutes. Those in group 1 study with background sound at a constant volume in the background. Those in group 2 study with noise that changes volume periodically. Those in group 3 study with no sound at all. After studying, all students take a 10 point multiple choice test over the material.

a. After conducting her initial ANOVA test, the researcher conducted post-hoc test. Use the results of the ANOVA test and the post-hoc testing to write a complete answer to the researcher's question. Include in your conclusion: the complete results of the ANOVA and an analysis of the post-hoc testing including any relevant results (including relevant t-statistics and p-values) to support your conclusion. What is the conclusion reached by this test? (4 pts)

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