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Question . 19 7.5 pts Does talking while walking slow you down? Suppose a study considered mean cadence (steps per minute) for subjects using no walking device and a standard walker. In addition, the cadence was measured when the subjects had to perform dual tasks. The second task was to respond vocally to a signal while walking. Cadence was for subjects who were just walking (using no walking device or a standard walker) and for subjects required to respond to a signal while walking. List the factors and the number of levels of each factor. 1 factor: task with 2 levels 2 factors: walking device with 2 levels and task with 1 level O 2 factors: walking device with 1 level and task with 1 level 1 factor: walking device with 1 level 2 factors: walking device with 2 levels and task with 2 levels