Megasigma Corp. has a process they believe is operating near the six sigma level and want to verify this. If the specification for a critical part in the process is 2.75 cm ± 0.05, and the standard deviation for the process is 0.02, at what sigma level is this process operating?. Megasigma Corp. has a process they believe is operating near the six sigma level and want to verify this. If the specification for a critical part in the process is 2.75 cm ± 0.05, and the standard deviation for the process is 0.02, at what sigma level is this process operating?