A task requires the completion of four activities. A teacher would like to know if differences in the sequence of the four activities results in different task completion times. The teacher selects three students and demonstrates the activities in random order to the students. Then each student completes the task with each of the activity sequences. The completion times are recorded. The following table shows the minutes for each student to complete each task.

	Students (minutes)
Sequence	Allen	Carla	Henry
A	22.4	20.8	21.5
B	17.0	19.4	20.7
C	19.2	20.2	21.2
D	20.3	18.6	20.4

b. What are the test statistics? (Round your answers to 4 decimal places.) Test statistic Values Treatments

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