The Test Scores for a Statistics course are given in the Excel below.

The data (X1, X2, X3, X4) are for each student. X1 = score on exam #1 X2 = score on exam #2 X3 = score on exam #3 X4 = score on final exam

Your professor wants to know if all tests are created equal.

At a 5% level of Significant, run a test to determine if the mean difference between the test scores is the same.

See Attached Excel for Data.