Question: The following data show the test scores of six individuals on a standardized test before and after attending a preparation seminar for the test.

a. State the hypotheses null and alternative that assuming, that there is no difference in the test scores before and after preparation.

b. Use non-parametric testing in order to determine whether or nor the seminar has been effective at the 5% level.

c. Give the Pearson and the Spearman correlation between the before and after values.