In a double sampling plan the two acceptance numbers are: c1 = 5 and c2 = 9. The
ID: 451249 • Letter: I
Question
In a double sampling plan the two acceptance numbers are: c1 = 5 and c2 = 9. The number of defectives found in the first sample is 6. Therefore, a second sample is taken. What is the maximum number of defectives allowed in the second sample for the lot to be accepted?
2
3
4
5
6
A manufacturing process is being monitored using a sample of size 40. The upper and lower control limits on percentage defectives are 6.30 % (.063) and 4.80 % (.048) respectively. On a given day 6 defective items were found in the sample of 50. Is the process in control?
The process is in control
The process is out of control
n developing control lines for a “p” chart the total number of defective items from all samples is 500, the number of samples is 150, and the sample size is 20. What would be the standard deviation used in developing the control lines? Identify the closest answer.
Close to 0.05
Close to 0.06
Close to 0.07
Close to 0.08
Close to 1.0
After setup in the job shop, the first items made are likely to be defectives. If the order size calls for 225 units, and the expected percent defective for start-up is 9 percent, how many units should be made? Identify the closest answer
225
246
248
250
260
2
3
4
5
6
A manufacturing process is being monitored using a sample of size 40. The upper and lower control limits on percentage defectives are 6.30 % (.063) and 4.80 % (.048) respectively. On a given day 6 defective items were found in the sample of 50. Is the process in control?
The process is in control
The process is out of control
n developing control lines for a “p” chart the total number of defective items from all samples is 500, the number of samples is 150, and the sample size is 20. What would be the standard deviation used in developing the control lines? Identify the closest answer.
Close to 0.05
Close to 0.06
Close to 0.07
Close to 0.08
Close to 1.0
After setup in the job shop, the first items made are likely to be defectives. If the order size calls for 225 units, and the expected percent defective for start-up is 9 percent, how many units should be made? Identify the closest answer
225
246
248
250
260
Explanation / Answer
1.
here C1 = 5 and C2 = 9
defectives found in first sample is 6
The maximum number of defectives allowed= 9-6 = 3 .
so only three more defectives can be permitted.