In: Statistics and Probability
2. The following data represent samples that were taken on 10 separate days. Each day has a varying sample size and the number of defects for the items sampled is listed. We want to see if this process is consistent and in control.
Day |
Sample Size |
Defects |
1 |
100 |
6 |
2 |
110 |
4 |
3 |
190 |
10 |
4 |
190 |
7 |
5 |
240 |
15 |
6 |
255 |
8 |
7 |
105 |
3 |
8 |
175 |
6 |
9 |
245 |
22 |
10 |
265 |
27 |
a. Find the UCL.
b. Find the LCL.
c. Is the process in control? Why/why not?
Please show all formulas, including steps to solve equation and round answers to four decimals