Question: A study of reaction time of children with cerebral palsy reported an average of 1.6 seconds on a particular task. A researcher believed that reaction time could be reduced by using a motivating set of directions. For example, "If you can respond to this light in less than a second and a half I'll give you a quarter". A group of children with cerebral palsy were located and they completed the reaction time task under the condition of a motivating set of directions. The reaction times for the 12 children are given below. Determine whether the treatment was successful.
1.4, 1.8, 1.1, 1.3, 1.6, 0.8, 1.5, 2.0, 1.4, 1.9, 1.8, 1.3