QUESTION 6 Which of the following statements is TRUE about the process capability analysis (asturting the process capability index Cpk is positive)? If the standard deviation of the process decreases, the process capability index Cpk increases o If the process mean increases, the process capability index Cpk increases. If the process mean d creases, the process capability index Cpk increases. O If the standard deviation of the process increases, the process capability index Cpk increases