Question
Control charts for x bar and R with subgroup size=4 are used to monitor a normally...
Control charts for x bar and R with subgroup size=4 are used to monitor a normally distributed quality characteristic. The control charts parameter were: X bar chart UCL=813, x bar chart CL=800, x bar chart LCL=787. R chart UCL=46.98, R chart CL=20.59, R chart LCL=0, both charts exhibit control. If the process mean shift from 800 to 780. What is the probability of detecting this shift on or before the second sample?
A.
0.9934
B.
0.9834
C.
0.9993
D.
0.9894
It's a multiple choice question.
Homework Answers
Answer #2
answered by: anonymous
Not the answer you're looking for?
Similar Questions
19,Suppose that you monitor the fraction defectives in ounces of a process that fills beer cans....
19,Suppose that you monitor the fraction defectives in ounces of
a process that fills beer cans. The data given below were collected
in the production process. Each day, 20 cans are inspected. What
control chart would be the best for process monitoring? Calculate
UCL and LCL of the relevant chart.
Days # of defectives
1 2
2 3
3 5
4 1
5 2
x-bar chart, UCL = 0.042 and LCL = 0
c chart, UCL = 0.1462...
The General Widgets Company (GWC) is interested in setting up x-bar and R charts, both with...
The General Widgets Company (GWC) is interested in setting up
x-bar and R charts, both with 3 sigma control limits on the net
weight of a 100 ounce widget. They have collected 100 samples using
the sample size of 9 and found that ?̿=99.95 and ?̅=1.3464.
However, they are planning on switching to a sample of size 4.
a)Set up the x-bar chart for a sample of size 4. b)Set up the R
chart for a sample of size 4....
Suppose you calculate “X bar bar” = 25 and “R bar” = 7.5 from 25 previous...
Suppose you calculate “X bar bar” = 25 and “R bar” = 7.5
from 25 previous samples of size 5 each. Assume the quality
characteristic has a normal distribution and both the “X bar” and R
charts show statistical control of the process. Specification
limits are at 24 ± 7.
c) Calculate the percentage of items
outside the specification limits.
d) Calculate the capability index. Comment
on the capability of the process.
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data...
The following are quality control data for a manufacturing
process at Kensport Chemical Company. The data show the temperature
in degrees centigrade at five points in time during a manufacturing
cycle.
Sample
x
R
1
95.72
1.0
2
95.24
0.9
3
95.18
0.7
4
95.42
0.4
5
95.46
0.5
6
95.32
1.1
7
95.40
0.9
8
95.44
0.3
9
95.08
0.2
10
95.50
0.6
11
95.80
0.6
12
95.22
0.2
13
95.58
1.3
14
95.22
0.6
15
95.04
0.8
16...
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data...
The following are quality control data for a manufacturing
process at Kensport Chemical Company. The data show the temperature
in degrees centigrade at five points in time during a manufacturing
cycle.
Sample
x
R
1
95.72
1.0
2
95.24
0.9
3
95.18
0.7
4
95.42
0.4
5
95.46
0.5
6
95.32
1.1
7
95.40
0.9
8
95.44
0.3
9
95.08
0.2
10
95.50
0.6
11
95.80
0.6
12
95.22
0.2
13
95.60
1.3
14
95.22
0.6
15
95.04
0.8
16...
1) Both X bar chart and R chart must be out of control for the process...
1) Both X bar chart and R chart must be out of control for the
process to be out of control true /False
2) A process in control does not produce unacceptable output.
true /False
3) A process is capable if the variations fall within +- 3
standard deviation true /False
4) Control charts tell Project Managers how to control the
project. true /False
The following are quality control data for a manufacturing process at Kensport Chemical Company. The data...
The following are quality control data for a manufacturing
process at Kensport Chemical Company. The data show the temperature
in degrees centigrade at five points in time during a manufacturing
cycle.
Sample
x
R
1
95.72
1.0
2
95.24
0.9
3
95.18
0.7
4
95.44
0.4
5
95.46
0.5
6
95.32
1.1
7
95.40
0.9
8
95.44
0.3
9
95.08
0.2
10
95.50
0.6
11
95.80
0.6
12
95.22
0.2
13
95.54
1.3
14
95.22
0.6
15
95.04
0.8
16...
The following data is X-Bar and R values for 12 samples of size n = 5....
The following data is X-Bar and R values for 12 samples of size
n = 5. They were taken from a process measuring various inductance
values for a new production line of high fidelity speakers.
Subgroup No., (X-Bar), ((Range))
1 (345) ((13)), 2 (347) ((14)), 3 (350) ((12)), 4 (346) ((11)),
5 (350) ((15)), 6 (345) ((16)), 7 (349)((14)), 8 (348) ((13)), 9
(348)((12)), 10 (354) ((15)), 11 (352) ((13)), 12 (355) ((16))
Create X-Bar and R control charts from...
1. T F Sometimes the interquartile range is used in establishing x bar charts 2. T...
1. T F Sometimes
the interquartile range is used in establishing x bar
charts
2. T F The
selection of the equation to determine the probability of accepting
a sample is partially based on the size of the sample.
3. T F R charts
may be used in place of S charts to control the variability of a
measurement
4. T F If I was
interested in the control of the number of defects on a particular
product, I would...
Below are X-bar and R values for 12 samples of size = 5. They are taken...
Below are X-bar and R values for 12 samples of size = 5. They
are taken from a process producing bearings. The measurements are
made on the inside diameter of the bearing. The data have been
coded from 0.50; in other words, a measurement of 0.50345 has been
recorded as 345. Range values are coded from 0.000; that is,
0.00013 is recorded as 13.
Subgroup Number
X-bar
Range
1
145
13
2
147
14
3
150
12
4
146
11...
ADVERTISEMENT
Need Online Homework Help?
Get Answers For Free
Most questions answered within 1 hours.
ADVERTISEMENT
Active Questions
asked 5 minutes ago
asked 17 minutes ago
asked 30 minutes ago
asked 31 minutes ago
asked 35 minutes ago
asked 36 minutes ago
asked 38 minutes ago
asked 53 minutes ago
asked 55 minutes ago
asked 58 minutes ago
asked 1 hour ago
asked 1 hour ago