A hospital is monitoring the surgeries that result in surgical complications. The number of surgeries each month and those resulting in a complication were recorded. The number of surgeries each month and those resulting in a complication were recorded. The number of surgeries each month can vary. Which of the following control charts is most appropriate to monitor this process? a. c-chart b. xbar and R chart c. p-chart d. np-chart
1. A hospital is monitoring the surgeries that result in surgical complications. The number of surgeries each month and those resulting in a complication were recorded. The number of surgeries each month and those resulting in a complication were recorded. The number of surgeries each month can vary. Which of the following control charts is most appropriate to monitor this process?
a. c-chart b. xbar and R chart c. p-chart d. np-chart
2.
A factory collected data on the number of nonconforming parts and constructed a p-chart. 15 samples of size 150 were collected. They determined that the average fraction of non-conforming parts was pbar=0.037. During production, a sample of 150 parts was taken, of which 11 were non-conforming. At the time this sample was taken:
b. the sample was outside the control limits
c. the sample was within the control limits
d. the upper control limit was 0.073
3. What is the upper control limit for a p-chart when the average daily production is 3575 units with an established fraction defective of 0.048?
a. 0.0587
b. 0.7053
c. 0.0600
d. 0.6893
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