Question: A study compared three different display panels for use by air traffic controllers. Each display panel was tested in a simulated emergency condition: 12 highly trained air traffic controllers took part in the study. Four controllers were randomly assigned to each panel. The tine (in seconds) needed to stabilize emergency conditions was recorded. The results are in the table below:

A B C

21 24 40

27 21 36

24 18 35

26 19 32

Determine the null and alternative hypothesis for your one-way Anova test. Let alpha = .05. (Hint: Use Minitab to calculate your F statistics. First input your three columns of data in Minitab’s worksheet. Then go to Stat, under Stat scroll down to ANOVA, open Anova and click on one-way unstacked. Continue with your problem.)