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 on the material. Their scores are as follows: a. b. C. GROUP constant sound random sound no sound TEST SCORES 7 4 6 8 6 6 2 5 5 3 4 4 7 2 24712 15 DF Copy and complete the following ANOVA table for this problem. Source Group Error Total What are the two (2) assumptions of an ANOVA? State the ANOVA hypotheses. SS 9 2 5 MS F (20 marks) (2 marks) (3 marks)

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 on the material. Their scores are as follows: a. Copy and complete the following ANOVA table for this problem. (20 marks) b. What are the two (2) assumptions of an ANOVA? (2 marks) c. State the ANOVA hypotheses