Question

air traffic controllers perform the vital function of regulating the traffic of passengers planes frequently air traffic. Controllers work long hours with little sleep researchers wanted to test their ability to make basic decisions as they become increasingly sleep deprived to test their abilities a sample of 6 air traffic controllers is selected and given a decision making skills test following 12 hours 24 hours and 48 hours sleep deprivation higher scores indication better making skills.

18 21 20 20 14 21 15 21 (a) Complete the F-table. (Round your answers to two decimal places.) df Fabt Between groups persons Within groups (error) Total (b) Compute a Bonferroni procedure and interpret the results. (Assume experimentwise alpha equal to 0.05. Select all that apply.) There is a significant difference in decision making for the 12-hour and 48-hour sleep deprivation conditions. There is a significant difference in decision making for the 12-hour and 24-hour sleep deprivation conditions. There is a significant difference in decision making for the 24-hour and 48-hour sleep deprivation conditions. There are no significant differences between any of the groups.

Answer 1

from given data:

Source of Variation	SS	df	MS	F
between groups	152.44	2	76.22	6.75
between persons	158.44	5	31.69
Error	112.89	10	11.29
Total	423.78	17

there is significant difference in decision making for the 12 hour and 48 hour sleep deprivation conditions