1. Which of the following is NOT an indication of an out-of-control process?
a. Five consecutive points fall on one side of the center line.
b. Four of five consecutive points fall within the outer two-thirds region between the center line and one of the control limits.
c. Two of three consecutive points fall in the outer one-third region between the center line and one of the control limits.
d. Two of three consecutive points fall in the outer one-third region between the center line and one of the control limits.
e. None of the above
2. A machined part has a lower specification limit of 3.5 inches and an upper specification limit of 3.9 inches. The range for the pre-control green zone is:
a. in statistical control.
b. normally distributed.
c. stable.
d. capable.