Last year the average daily change in the Dow Jones Industrial Index was 7.3points.A random sample of 15 trading days this year showed the average change to be 5.6 points with standard deviation 10.2.Test the claim that the average change in the index is less this year than it was last year.

28)List thep-value

29)Have we proven that the change is significant? (yes or no)

30)what type of error could be made with the type of conclusion drawn fromthe results of this study?