Production mgmt homework assignment | Operations Management homework help
Details of Assignment (W4): Complete problems 6.12, S6.11, S6.20, S6.23, S6.27, and S6.35 in the textbook.Submit one Excel file. Put each problem result on a separate sheet in your file.
(See upload for more details)
Save your time - order a paper!
Get your paper written from scratch within the tight deadline. Our service is a reliable solution to all your troubles. Place an order on any task and we will take care of it. You won’t have to worry about the quality and deadlines
Order Paper NowS6.11Twelve samples, each containing five parts, were taken
from a process that produces steel rods. The length of each rod in
the samples was determined. The results were tabulated and sample
means and ranges were computed. The results were:
|
SAMPLE |
SAMPLE MEAN (in.) |
RANGE (in.) |
|
1 |
10.002 |
0.011 |
|
2 |
10.002 |
0.014 |
|
3 |
9.991 |
0.007 |
|
4 |
10.006 |
0.022 |
|
5 |
9.997 |
0.013 |
|
6 |
9.999 |
0.012 |
|
7 |
10.001 |
0.008 |
|
8 |
10.005 |
0.013 |
|
9 |
9.995 |
0.004 |
|
10 |
10.001 |
0.011 |
|
11 |
10.001 |
0.014 |
|
12 |
10.006 |
0.009 |
a) Determine the upper and lower control limits and the overall
means for x-charts and R-charts.
b) Draw the charts and plot the values of the sample means and
ranges.
c) Do the data indicate a process that is in control?
d) Why or why not?
