EBK PRINCIPLES OF OPERATIONS MANAGEMENT
10th Edition
ISBN: 8220102744059
Author: HEIZER
Publisher: PEARSON
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Chapter 10, Problem 32P
Summary Introduction
To determine: The
Introduction: Sample size is required to determine the number of observations that are necessary to find the true cycle time.
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erations Management Spring21
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stion
In a fabric manufacturing factory, the quality control process using control charts from SPC. In an hour there are a total of 5 samples are taken
each having 5 observations regarding the thickness of fabric in measured in millimeters. In a particular hour, the sample means (X-bar) are noted to
be: 156.46, 199.62, 189.31, 102.22, and112.09 respectively. In the same sample, the corresponding ranges are: 11.97, 12.17, 13.94, 11.86, and
11.83 respectively. What are the lower and upper control limits for the X-bar chart?
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ed out of
O a.
None is correct
lag
O b.
156.55, 170.47
tion
O C.
144.77, 159.11
O d. 145.40, 190.72
O e. 143.55, 165.47
Of.
142.92, 160.66
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Instruction: Prepare a check sheet to analyze the data below from customer complaints, then prepare a list of recommendations that will address these complaints.
Case: Tip Top Markets
Tip Top Markets is a regional chain of supermarkets located in the southeastern United States. Karen Martin, manager of one of the stores, was disturbed by the large number of complaints from customers at her store, particularly on Tuesdays, so she obtained complaint records from the store’s customer service desk for the last nine Tuesdays.
June 1
out of orange yogurt
produce not fresh
bread stale
lemon yogurt past sell date
checkout lines too long
couldn’t find rice
overcharged
milk past sell date
double charged
stock clerk rude
meat smelled strange
cashier not friendly
charged for item not purchased
out of maple walnut ice cream
couldn’t find the sponges
something green in meat
meat tasted strange
didn’t like music
store too cold…
Question 3
A coffee producer wishes to produce new 50-gram pack for people who like
to bring their own coffee when they travel. The producer asked your help to
monitor the quality of the process by setting up the appropriate control charts.
Based on the data shown in the table, is the process in control?
Sample
2
3
4
5
6
7
8
9
2
3
4
Values for A2, D3 and D4
Sample Size n
10
1
54.5
50.6
51.1
52.7
51.7
5
6
7
8
9
10
11
51.1
54.0
53.2
51.9
A2 D3
1.88
0
1.02
0
0.73 0
0.58 0
0.48
0
0.42 0.08
0.37 0.14
0.34 0.18
0.31 0.22
0.29
0.26
12
0.27 0.28
Show all your workings clearly.
2
54.3
53.5
54.3
52.1
51.2
Observation
51.5
52.3
50.4
50.2
D4
3.27
2.57
2.28
2.11
2.00
1.92
1.86
1.82
1.78
1.74
1.72
3
53.8
53.2
50.4
51.3
54.7
54.7
54.7
53.4
50.2
4
50.4
54.9
50.7
51.0
54.3
50.4
51.4
51.4
52.9
Chapter 10 Solutions
EBK PRINCIPLES OF OPERATIONS MANAGEMENT
Ch. 10 - Prob. 1EDCh. 10 - Prob. 1DQCh. 10 - Prob. 2DQCh. 10 - Prob. 3DQCh. 10 - Prob. 4DQCh. 10 - Prob. 5DQCh. 10 - Prob. 6DQCh. 10 - Prob. 7DQCh. 10 - Prob. 8DQCh. 10 - Prob. 9DQ
Ch. 10 - Prob. 10DQCh. 10 - Prob. 11DQCh. 10 - Prob. 12DQCh. 10 - Prob. 13DQCh. 10 - Prob. 14DQCh. 10 - Prob. 1PCh. 10 - Prob. 2PCh. 10 - Prob. 3PCh. 10 - Prob. 4PCh. 10 - Prob. 5PCh. 10 - Prob. 6PCh. 10 - Prob. 7PCh. 10 - Prob. 8PCh. 10 - Prob. 9PCh. 10 - Prob. 10PCh. 10 - Prob. 11PCh. 10 - Prob. 12PCh. 10 - Prob. 13PCh. 10 - Prob. 14PCh. 10 - Prob. 15PCh. 10 - Prob. 16PCh. 10 - Prob. 17PCh. 10 - Prob. 18PCh. 10 - Prob. 19PCh. 10 - Prob. 20PCh. 10 - Prob. 21PCh. 10 - Prob. 22PCh. 10 - Virginia College promotes a wide variety of...Ch. 10 - Prob. 24PCh. 10 - Prob. 25PCh. 10 - Prob. 26PCh. 10 - Prob. 27PCh. 10 - Prob. 28PCh. 10 - Prob. 29PCh. 10 - Prob. 30PCh. 10 - Prob. 31PCh. 10 - Prob. 32PCh. 10 - Prob. 33PCh. 10 - Prob. 34PCh. 10 - Prob. 35PCh. 10 - Prob. 36PCh. 10 - Prob. 37PCh. 10 - Prob. 38PCh. 10 - Prob. 1CSCh. 10 - Prob. 2CSCh. 10 - Prob. 3CSCh. 10 - Prob. 4CSCh. 10 - Prob. 1.1VCCh. 10 - Prob. 1.2VCCh. 10 - Prob. 1.3VCCh. 10 - Prob. 2.1VCCh. 10 - Prob. 2.2VCCh. 10 - Prob. 2.3VCCh. 10 - Prob. 2.4VC
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