5.60 A computer game. A multimedia statistics learning system includes a test of skill in using the computer's mouse. The software displays a circle at a random location on the computer screen. The subject clicks in the circle with the mouse as quickly as possible. A new circle appears as soon as the subject clicks in the old one. Table 5.3 gives data for one subject's trials, 20 with each hand. Distance is the distance from the cursor location to the center of the new circle, in units whose actual size depends on the size of the screen. Time is the time required to click in the new circle, in milliseconds.27 We suspect that time depends on distance. We also suspect that performance will not be the same with the right and left hands. Analyze the data with a view to predicting performance separately for the two hands. COMGAME

TABLE 5.3 Reaction times (in milliseconds) in a computer game Time Distance Hand Time Distance Hand 115 190.70 right 240 190.70 left 96 138.52 right 190 138.52 left 110 165.08 right 170 165.08 left 100 126.19 right 125 126.19 left 111 163.19 right 315 163.19 left 101 305.66 right 240 305.66 left 111 176.15 right 141 176.15 left 106 162.78 right 210 162.78 left 96 147.87 right 200 147.87 left 96 271.46 right 401 271.46 left 95 40.25 right 320 40.25 left 96 24.76 right 113 24.76 left 96 104.80 right 176 104.80 left 106 136.80 right 211 136.80 left 100 308.60 right 238 308.60 left 113 279.80 right 316 279.80 left 123 125.51 right 176 125.51 left 111 329.80 right 173 329.80 left 95 51.66 right 210 51.66 left 108 201.95 right 170 201.95 left