Can someone answer these questions with explanation? (3 Questions) 1. 2. 3. The
ID: 359083 • Letter: C
Question
Can someone answer these questions with explanation? (3 Questions)
1.
2.
3.
The mean of a process is 50, and the standard deviation is 2. The company uses statistical control process (SPC) to monitor the process. It uses sample size on 4, and has set Upper Control Limit (UCL) to 52 and Lower Control Limit (LCL) to 48. Based on the following measures taken over 6 samples, which of the follow is correct? Sample 1Sample 2 Sample 3 Sample 4Sample 5Sample6 50.09 49.9348.82 47.41 49.85 50.46 50.92 47.46 44.6354.7446.8951.54 44.59 47.9445.77 49.56 48.83 44.33 45.77 49.4253.3 50.9 53.62 46.88 O The process is "in control" O The process is "not in control" sometimes O The process is "not in control" O The process is "not in control" only onceExplanation / Answer
1. The process is in control as the mean of the sample is 48.88. It is with in the upper and lower limit of process which is 52 and 48.
2. The process will generate more product which are not acceptable by the customer , as the upper and lower limit become narrow, more value will fall above or below this limit which will make this outcome not acceptable.
3.The control limit will become wider as more sample mean standard deviation will change as deviation from mean will change , which will affect the 3-sigma limit and it will make the limit wider.