Two machines are currently in use in a manufacturing process. The standards for this process are LSL = 0.400" and USL = 0.403". Machine One is currently producing with mean 0.401 and standard deviation 0.0004. Machine Two is currently producing with mean 0.4015 and standard deviation 0.0005. Which machine has the higher capability index?
Machine One has an index of (round your response to two decimal places).