A 23 experiment was performed by an industrial engineer and the results are given in the table below. Half of the experiment was done on one day and the remaining half on the next day.

Setup Flasher Type Inertia of Task Average Randomized Lever Response Order in Time (tenths o Which second) Experiments Were 1 Performed A low Y 2 11 1 B low Y 12 3 4 A high Y 10 4 5 B high Y 11 5 A low Z 16 6 2 B low Z 7 14 6 A high Z 15 7 8 B high Z 19 8