7.3146 A study compared three display panels used by air traffic controllers. Each display panel was tested for four different simulated emergency conditions. Twenty-four highly trained air traffic controllers were used in the study. Two controllers were randomly assigned to each display panel-emergency condition combination. The time (in seconds) required to stabilize the emergency condition was recorded. The following table gives the resulting data and the JMP output of a two-way ANOVA of the data. Emergency Condition 2 Display Panel 4 17 14 15 12 21 31 34 20 25 14 24 13 22 31 32 28 37 19 19 10 29 15 24 Least Squares Means Estimates Panel Estimate Condition Entimate 1 17.166667 24.500000 32.166667 13.333333 21.500000 18.250000 25.625000 1 2 4 Analysin of Variance Sum of Mean Source F Ratio Dr 11 12 23 Squares 1482.4583 Square 134.769 Model 32.6713 Error c. Total 49.5000 1531.9583 4.125 Prob > <.0001 F Effect Tests Sun of F Ratio 26.4949 Source Nparm Dr Prob >P Squares 2 2 216. 5833 3 3 1247.4583 6 6 Panel <.0001 Condition Panel* Condition 100.8047 <.0001 16.4167 0.6633 0.6809 Tukey HSD All Pairwise Comparisons Quantile 2.66776, Adjusted DF = 12.0, Adjustment = Tukey Prob> t| Lower 95 Upper 95% Panel -Panel Difference Std Error t Ratio 3.25000 1.015505 -4.12500 1.015505 3.20 -4.06 0.0194 0.5409 5.95912 0.0042 < .0001+ -10.0841 -4.66588 -6.8341 -1.41588 -7.37500 1.015505 -7.26 Tukey HSD All Pairwise Comparisons Quantile 2.9688, Adjusted DF = 12.0, Adjustment = Tukey Condition -Condition Difference Std Error t Ratio Prob>|t| Lower 95 Upper 95 0.0002. -10.0146 <.0001. -18.4812 -11.5188 -3.8521 -7.3333 1.172604 -15.0000 1.172604 3.8333 1.172604 -6.25 -12.79 3.27 4 0.0297 0.3521 -7.6667 1.172604 0.0001. -11.1479 -6.54 9.52 16.06 -4.1854 11.1667 1.172604 18.8333 1.172604 <.0001 7.6054 14.6479 <.0001 15.3521 22.3146 Click here for the Excel Data File (a) Interpret the interaction plot in Figure 12.12. Then test for interaction with a=.05. Panel B requires Ness time F(int)» .6633, p-value= .0809: to stabilize the emergency condition. cannot reject H0, no interaction exists. (b) Test the significance of display panel effects with a= .05. F = 26.4949, p-value = .0001; roject HO (c) Test the significance of emergency condition effects with a =.05. F 100.8047, p-value -.,0001; reject но
7.3146 A study compared three display panels used by air traffic controllers. Each display panel was tested for four different simulated emergency conditions. Twenty-four highly trained air traffic controllers were used in the study. Two controllers were randomly assigned to each display panel-emergency condition combination. The time (in seconds) required to stabilize the emergency condition was recorded. The following table gives the resulting data and the JMP output of a two-way ANOVA of the data. Emergency Condition 2 Display Panel 4 17 14 15 12 21 31 34 20 25 14 24 13 22 31 32 28 37 19 19 10 29 15 24 Least Squares Means Estimates Panel Estimate Condition Entimate 1 17.166667 24.500000 32.166667 13.333333 21.500000 18.250000 25.625000 1 2 4 Analysin of Variance Sum of Mean Source F Ratio Dr 11 12 23 Squares 1482.4583 Square 134.769 Model 32.6713 Error c. Total 49.5000 1531.9583 4.125 Prob > <.0001 F Effect Tests Sun of F Ratio 26.4949 Source Nparm Dr Prob >P Squares 2 2 216. 5833 3 3 1247.4583 6 6 Panel <.0001 Condition Panel* Condition 100.8047 <.0001 16.4167 0.6633 0.6809 Tukey HSD All Pairwise Comparisons Quantile 2.66776, Adjusted DF = 12.0, Adjustment = Tukey Prob> t| Lower 95 Upper 95% Panel -Panel Difference Std Error t Ratio 3.25000 1.015505 -4.12500 1.015505 3.20 -4.06 0.0194 0.5409 5.95912 0.0042 < .0001+ -10.0841 -4.66588 -6.8341 -1.41588 -7.37500 1.015505 -7.26 Tukey HSD All Pairwise Comparisons Quantile 2.9688, Adjusted DF = 12.0, Adjustment = Tukey Condition -Condition Difference Std Error t Ratio Prob>|t| Lower 95 Upper 95 0.0002. -10.0146 <.0001. -18.4812 -11.5188 -3.8521 -7.3333 1.172604 -15.0000 1.172604 3.8333 1.172604 -6.25 -12.79 3.27 4 0.0297 0.3521 -7.6667 1.172604 0.0001. -11.1479 -6.54 9.52 16.06 -4.1854 11.1667 1.172604 18.8333 1.172604 <.0001 7.6054 14.6479 <.0001 15.3521 22.3146 Click here for the Excel Data File (a) Interpret the interaction plot in Figure 12.12. Then test for interaction with a=.05. Panel B requires Ness time F(int)» .6633, p-value= .0809: to stabilize the emergency condition. cannot reject H0, no interaction exists. (b) Test the significance of display panel effects with a= .05. F = 26.4949, p-value = .0001; roject HO (c) Test the significance of emergency condition effects with a =.05. F 100.8047, p-value -.,0001; reject но
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
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