What is statistical significance?  If we randomly assign subjects to two groups we would expect there to be some difference in the groups just by chance.  If a difference is statistically significant then it is large enough that we would not expect it to happen just by chance.  When we compare the results of an experiment, if there is a statistically significant difference then we can conclude that there is a cause-effect relationship between the explanatory variable and the response variable.  In this activity we will explore what size difference that is due to chance.  This will help us determine statistically significant differences.

The Experiment

Have you ever used music at work to jack up productivity or change your mood? Interestingly some rhythms such as baroque, induce enzymes in the brain and add amazing well being and focus.  Other tunes leave you punchy ... and unable to focus. Classicalmusic, such as Haydn and Mozart, often improves concentration and memory when played in the background.

I would like to determine if listening to classical music while studying improves exam scores.  Twenty students volunteer to participate in my experiment.  Outline the experiment. Use the example shown below as a guide.

Attachment:- STAT 1350.docx