What is the expectation that two consecutive samples would both fall between the target area and the specification limit on the high side?
Sometimes on a Control Chart, you may get two consecutive samples outside the target area but inside the specification. What is the expectation that two consecutive samples would both fall between the target area and the specification limit on the high side?
OPTIONS
- 1/71
- /49
- 1/98
- 1/196
ANSWER
1/196
EXPLANATION
The chance of two parts that can fall outside the control lines is 1/7 times 1/7 = 1/49. Since there are 4 ways it can occur, 1/196 is right answer
