Write the summary statement for the first example on the exercises page (Background Sound Example).

Background Sound Example

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 24 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.Their scores follow:

Learning with Background Sound Constant Sound Random Sound No Sound 5 UUHNAYAN NNYAAW