A task requiles the carnipletion of four activbies. A tescher would Hke to know in diterences in the sequence of the four activities tesule in difiement task completion times. The seacher selects thice students and demonstrates the activities in random order to the students. Then each student completes the task whe cach of the activily sequences. The complebon bines are fecorded. The following table shows the minutes for each stadent to complete each taske b. What are the test statistics? (Round your answers to 4 decimal places.).