EBK OPERATIONS MANAGEMENT
13th Edition
ISBN: 8220103675987
Author: Stevenson
Publisher: YUZU
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Question
Chapter 9, Problem 3P
Summary Introduction
To draw: The run chart based on the given information.
Introduction: Run-chart refers to the graph that would display the recorded data based on the time sequence. It would form a line chart.
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Prepare a run diagram for this emergency call data. Use five-minute intervals (i.e., count the calls received in each five-minute interval. Use intervals of 0 to 4, 5 to 9, etc.). Note: Two or more calls may occur in the same minute; there were three operators on duty this night. What can you conclude from the run chart?
Prepare a run diagram for this emergency call data. Use five-minute intervals (i.e., count the calls received in each five-
minute interval. Use intervals of 0-4, 5-9, etc.). Note: Two or more calls may occur in the same minute; there were
three operators on duty this night. What can you conclude from the run chart?
Call
Time
Call
Time
Call
Time
1
2
3
4
5
6
7
8
9
10
11
1:03
1:06
1:09
1:11
1:12
1:17
1:21
1:27
1:28
1:29
1:31
12
13
14
15
16
17
18
19
20
21
22
1:36
1:39
1:42
1:43
1:44
1:47
1:48
1:50
1:52
1:53
1:56
23
24
25
26
27
28
29
30
31
32
33
1:56
2:00
2:00
2:01
2:02
2:03
2:03
2:04
2:06
2:07
2:08
Call
34
35
36
37
38
39
40
41
42
Time
2:08
2:11
2:12
2:12
2:13
2:14
2:14
2:16
2:19
a. re-organize the above data for your analysis (using five-minute intervals; 0-4, 5-9, etc)
b. Provide your diagram that shows the number of emergency calls by eacn five-minute intervals from 1am to 2:20am
c. what can you conclude from the chart?
8.
A teller at a drive-up window at a bank had the following service times (in minutes) for 20 randomly selected customers:
SAMPLE
1
2
3
4
4.5
4.6
4.5
4.7
4.2
4.5
4.6
4.6
4.2
4.4
4.4
4.8
4.3
4.7
4.4
4.5
4.3
4.3
4.6
4.9
Select a chart to monitor the central tendency of the process, what are the 3-sigma control limits using a mean chart? Keep 3 decimal places.
Select one:
a.
LCL = 4.212, UCL = 4.788
b.
LCL = 4.414, UCL = 4.586
c.
LCL = 4.245, UCL = 4.755
d.
None of the other options.
e.
LCL = 4.385, UCL = 4.615
Chapter 9 Solutions
EBK OPERATIONS MANAGEMENT
Ch. 9.10 - Prob. 1RQCh. 9 - Prob. 1DRQCh. 9 - Prob. 2DRQCh. 9 - Prob. 3DRQCh. 9 - Prob. 4DRQCh. 9 - Prob. 5DRQCh. 9 - Prob. 6DRQCh. 9 - Prob. 7DRQCh. 9 - Prob. 8DRQCh. 9 - Prob. 9DRQ
Ch. 9 - Prob. 10DRQCh. 9 - Prob. 11DRQCh. 9 - Prob. 12DRQCh. 9 - Prob. 13DRQCh. 9 - List the steps of problem solving.Ch. 9 - Prob. 15DRQCh. 9 - Prob. 16DRQCh. 9 - Prob. 17DRQCh. 9 - What trade-offs are involved in deciding on...Ch. 9 - Prob. 2TSCh. 9 - Prob. 3TSCh. 9 - Prob. 1CTECh. 9 - Prob. 2CTECh. 9 - Prob. 3CTECh. 9 - Prob. 4CTECh. 9 - Make a check sheet and then a Pareto diagram for...Ch. 9 - Prob. 2PCh. 9 - Prob. 3PCh. 9 - Prob. 4PCh. 9 - Prob. 5PCh. 9 - Prob. 6PCh. 9 - Prob. 7PCh. 9 - Prepare a scatter diagram for each of these data...Ch. 9 - Prepare a flowchart that describes going to the...Ch. 9 - Prob. 10PCh. 9 - The county sheriffs department responded to an...Ch. 9 - Prob. 12PCh. 9 - Prob. 1.1CQCh. 9 - Prob. 2.1CQ
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