Operations Management: Processes And Supply Chains (12th Global Edition) - Does Not Include Mylab Operations Management
12th Edition
ISBN: 9780134890357
Author: Lee J. Krajewski, Manoj K. Malhotra
Publisher: Pearson Global Edition
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Question
Chapter 3, Problem 15P
(a)
Summary Introduction
Interpretation: The p-chart is to be constructed.
Concept Introduction:
The monitoring of the nonconforming units in sample in statistical quality control is done by the representation of the p-chart.
(b)
Summary Introduction
Interpretation: The waiting time of the patients is to be concluded.
Concept Introduction:
The monitoring of the nonconforming units in sample in statistical quality control is done by the representation of the p-chart.
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The overall average on a process you are attempting to monitor is
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1.72.
Sample size is given to be
4.
Part 2
a) Determine the 3-sigma
x-chart
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Upper Control Limit
(UCLx)=enter your response here
units (round your response to two decimal places).
Part 3
Lower Control Limit
(LCLx)=enter your response here
units (round your response to two decimal places).
Part 4
b) Now determine the 2-sigma
x-chart
control limits.
Upper Control Limit
(UCLx)=enter your response here
units (round your response to two decimal places).
Part 5
Lower Control Limit
(LCLx)=enter your response here
units (round your response to two decimal places).
Part 6
How do the control limits change?
A.
The control limits are tighter for the 3-sigma
x-chart
than for the 2-sigma
x-chart.
B.
The control limits for the
2-sigma
x-chart
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An automatic filling machine is used to fill 1-liter bottles of cola. The machine’s output is approximately normal with a mean of 1.0 liter and standard deviation of .01 liter. Output is monitored using means of samples of 25 observations.
Determine upper and lower control limits that will include roughly 97% of the sample means when the process is in control. Using Appendix B, Table A to find the value of Z corresponding to the mean control limits.
The results of inspection of DNA samples taken over the past 10 days are given below. Sample size is 100.
LCLp
Day
Defectives
=
1
5
2
7
3
7
4
9
5
5
6
6
a) The upper and lower 3-sigma control chart limits are:
UCL = 0.127 (enter your response as a number between 0 and 1, rounded to three decimal places).
(enter your response as a number between 0 and 1, rounded to three decimal places).
7
1
8
6
9
10
10
1
Chapter 3 Solutions
Operations Management: Processes And Supply Chains (12th Global Edition) - Does Not Include Mylab Operations Management
Ch. 3 - Should a very pricey handcrafted object of beauty...Ch. 3 - Prob. 2DQCh. 3 - Prob. 3DQCh. 3 - Prob. 1PCh. 3 - Prob. 2PCh. 3 - Prob. 3PCh. 3 - Prob. 4PCh. 3 - Prob. 5PCh. 3 - Prob. 6PCh. 3 - Prob. 7P
Ch. 3 - Prob. 8PCh. 3 - Prob. 9PCh. 3 - Prob. 10PCh. 3 - Prob. 11PCh. 3 - Prob. 12PCh. 3 - Prob. 13PCh. 3 - Prob. 14PCh. 3 - Prob. 15PCh. 3 - Prob. 16PCh. 3 - Prob. 17PCh. 3 - Prob. 18PCh. 3 - Prob. 19PCh. 3 - Prob. 20PCh. 3 - Prob. 21PCh. 3 - Prob. 26PCh. 3 - Prob. 27PCh. 3 - Prob. 28PCh. 3 - Prob. 29PCh. 3 - Prob. 31PCh. 3 - Prob. 1AMECh. 3 - Prob. 2AMECh. 3 - Prob. 3AMECh. 3 - Prob. 4AMECh. 3 - Prob. 5AMECh. 3 - Prob. 1VCCh. 3 - Prob. 2VC
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