Susan Sound predicts that students will learn most effectively with a constant b
ID: 444365 • Letter: S
Question
Susan Sound predicts that students will learn most effectively with a constant background sound, as opposed to an unpredictable sound or no sound at all. She randomly divides twenty-four students into three groups of eight. 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. Does sound have any effect on the mean test scores of students?
Use the data given below:
1) The test statistic value for comparing the effects of different treatments on the mean response variable is . (enter 2 decimal points)
2) The critical value is . (enter 2 decimal points)
group 1) constant sound 2) random sound 3) no sound test scores 7 5 2 4 5 4 6 3 7 8 4 1 6 4 2 6 7 1 2 2 5 9 2 5Explanation / Answer
Susan Sound predicts that students will learn most effectively with a constant b
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