Which of the Following Statements Is True About Six-Quality Quality

Multiple Choice

Which of the following statements is true about Six-Quality Quality?

A) Six sigma simply means that six standard deviations are used in an R-chart instead of three.
B) In some environments, six sigma is necessary to provide completed products of acceptable quality.
C) With six sigma, the likelihood of a defect occurring due to random variations is equal to .01 percent.
D) In Six sigma, the sigma refers to the process mean.