Air traffic controller perform the vital function of regulating the traffic of passengers planes. Frequently, air traffic controller work long hours with little sleep. Researchers wanted to test their ability to make basic decision as they become increasingly sleep deprived. To test their ability, a sample of six air traffic controller's is selected and given a decision making skills test following 12 hour, 24 hour, and 48 hours sleep deprivation. Higher scores syndicate better decision making skills. The table test list the results of the study.

12 hr 24 hrs. 48hrs

24. 18. 17

19. 23. 22

34. 24. 22

28. 22. 15

24. 16. 16

22. 21. 15

table: f table (round your answer to two decimal)

source. SS. df. MS. F obt

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Within groups

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