In: Statistics and Probability
Use the following information to answer questions (problems) 16
- 18. The following data are the result of inspecting aircraft seat
belt buckles produced in various lot sizes.
Number of buckles in each sample |
Number of defective buckles found |
100 |
15 |
110 |
7 |
95 |
18 |
90 |
8 |
150 |
10 |
85 |
14 |
50 |
9 |
115 |
20 |
110 |
6 |
95 |
12 |
A- WORTH 4 POINTS: What is the average percent defective? Show work & formulae used or just use Minitab and attach/embed.
ANSWER: _______________________
B- WORTH 8 POINTS: What are the upper and lower control limits for the smallest subgroup and the largest subgroup? Show work & formulae used or just use Minitab and attach/embed. Each answer is worth two points apiece.
C- WORTH 4 POINTS: What type of control chart should be used for the data above?