66 Battle simulation trials. In order to evaluate their situational awareness, fighter aircraft pilots participate in battle simulations. At a random point in the trial, the simulator is frozen and data on situational awareness are immediately collected. The simulation is then continued until, ultimately, performance (e.g., number of kills) is measured. A study reported in Human Factors (Mar.

1995) investigated whether temporarily stopping the simulation results in any change in pilot performance.

Trials were designed so that some simulations were stopped to collect situational awareness data while others were not. Each trial was then classified according to the number of kills made by the pilot. The data for 180 trials are summarized in the accompanying contingency table and saved in the SIMKILLS file. Conduct a contingency table analysis and interpret the results fully.

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Number of Kills 0 1 2 3 4 Totals Stops 32 33 19 No Stops 24 36 18 58 23 91 89 Totals 56 69 37 13 5 180