Use the data in the following table to create a fractionnonconforming (p) chart. The column ofnp represents the number ofnon-conforming units. Is the process in control? (5 points)
Sample | n | np | p |
1 | 100 | 7 | 0.07 |
2 | 100 | 10 | 0.10 |
3 | 100 | 12 | 0.12 |
4 | 100 | 4 | 0.04 |
5 | 100 | 9 | 0.09 |
6 | 100 | 11 | 0.11 |
7 | 100 | 10 | 0.10 |
8 | 100 | 18 | 0.18 |
9 | 100 | 13 | 0.13 |
10 | 100 | 21 | 0.21 |
Question 2
A bank's manager has videotaped 20 different teller transactionsto observe the number of mistakes being made. Ten transactions hadno mistakes, five had one mistake and five had two mistakes.Compute proper control limits at the 90% confidence level. Is theprocess in control? Show your work.
