Develop Xbar and R charts for the 1st 10 days of monitoring. Plot the data for the 1st 10 days on the Xbar and R charts. Is the process in control? If the control chart indicates an out-of-control process, note which days, the pattern, and whether it is the Xbar or R chart. Now that we have set up the control charts using enough data from a stable process, the 30 days of data, we will monitor the process. While monitoring the process, what will we use as the lower control limit for the X-bar Chart to compare against our new x-bar values ? Enter your response to three decimal places. You do not need to include the units (minutes), ONLY the numeric value. USE EXCELL DATA TO GET LOWER CONTROL LIMIT
Develop Xbar and R charts for the 1st 10 days of monitoring. Plot the data for the 1st 10 days on the Xbar and R charts. Is the process in control? If the control chart indicates an out-of-control process, note which days, the pattern, and whether it is the Xbar or R chart. Now that we have set up the control charts using enough data from a stable process, the 30 days of data, we will monitor the process. While monitoring the process, what will we use as the lower control limit for the X-bar Chart to compare against our new x-bar values ? Enter your response to three decimal places. You do not need to include the units (minutes), ONLY the numeric value. USE EXCELL DATA TO GET LOWER CONTROL LIMIT
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter2: Introduction To Spreadsheet Modeling
Section: Chapter Questions
Problem 20P: Julie James is opening a lemonade stand. She believes the fixed cost per week of running the stand...
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Question
Background information: Allison collected additional days of data to monitor the process.
Steps to monitor using the control charts:
- Now monitor the process. An additional ten days of data have been collected, see table labeled “1st 10 Days of Monitoring Reservation Processing Time” in the Data File.
- Develop Xbar and R charts for the 1st 10 days of monitoring. Plot the data for the 1st 10 days on the Xbar and R charts.
- Is the process in control? If the control chart indicates an out-of-control process, note which days, the pattern, and whether it is the Xbar or R chart.
Now that we have set up the control charts using enough data from a stable process, the 30 days of data, we will monitor the process. While monitoring the process, what will we use as the lower control limit for the X-bar Chart to compare against our new x-bar values ? Enter your response to three decimal places. You do not need to include the units (minutes), ONLY the numeric value.
USE EXCELL DATA TO GET LOWER CONTROL LIMIT
Transcribed Image Text:A
B
C
1 RESERVATION TIME in MINUTES
2
3
456780
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
Day
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Ready
Data Set
1
4.5
3.7
4.3
3.7
4.4
3.5
4.5
3.6
4.4
4.3
3.7
4.5
4.2
4.2
3.7
4.6
4.2
4.4
4.2
4.3
4.6
4.1
3.6
4.1
4.3
4.4
3.6
3.5
4.5
4.4
+
2
3.8
4.6
3.5
3.7
4.6
3.5
4.3
3.6
3.5
4.3
3.5
3.5
4.3
4.2
4.5
4.4
3.5
3.4
3.4
4.5
4.6
4.3
4.0
4.5
4.1
4.6
3.8
3.5
4.2
3.5
D
Accessibility: Good to go
3
3.9
4.2
4.2
4.4
3.8
4.3
4.1
4.4
4.6
4.0
4.2
3.8
3.4
4.0
4.6
4.5
4.4
3.6
3.4
4.5
4.0
3.6
3.6
3.6
3.5
4.5
4.0
4.3
3.9
4.1
E
4
4.4
3.9
4.1
4.4
4.6
4.3
4.5
3.7
3.6
3.5
3.7
4.2
4.4
3.8
3.5
3.8
3.4
3.9
4.3
3.6
4.4
4.5
3.4
3.9
3.9
4.4
3.7
4.2
3.8
4.1
TI
F
5
4.0
3.9
4.3
3.6
4.3
3.4
3.5
3.8
4.1
3.8
3.9
4.1
3.6
4.1
3.5
4.3
3.7
4.3
4.0
3.6
3.9
3.8
3.5
3.4
3.5
4.2
3.9
4.6
4.0
4.4
G
H
Day
1
2
3
4
5
6
7
8
9
10
I
Day
1
2
3
4
5
6
7
8
9
10
1st 10 Days of Monitoring Reservation Processing Time
1
3
4
3.5
4.4
4.9
3.9
4.2
3.3
4.3
5.1
5.2
3.5
J
5.0
4.3
4.4
4.2
4.3
4.2
3.7
4.0
4.2
4.0
2
4.5
3.5
3.2
ا ب ا ب ا ب
3.7
3.8
3.6
4.6
5.2
3.3
3.8
K
2
4.3
4.1
4.4
3.8
4.1
4.3
3.6
4.3
4.6
4.4
3.4
4.3
3.4
3.5
3.4
4.4
4.1
2.8
3.9
4.5
L
2nd 10 Days of Monitoring Reservation Processing Time
1
3
4
4.1
4.3
4.2
4.0
4.2
4.2
4.6
4.3
4.1
4.2
4.7
3.1
3.1
4.6
4.3
4.9
4.8
4.9
5.1
3.8
M
4.5
4.3
4.1
4.9
4.3
4.3
3.4
4.0
4.0
4.4
5
5.0
3.1
4.9
3.1
3.5
3.3
4.4
4.2
3.3
5.1
5
4.2
4.2
4.0
4.1
4.2
4.4
3.8
4.3
3.8
4.2
N
O
P
Q
R
S
B
II
T
I
U
V
+
115%
W
Expert Solution
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Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step 1: State the given information.
VIEWStep 2: Perform the needed calculations for X-bar chart and R-chart
VIEWStep 3: Calculate the control limits for X-chart.
VIEWStep 4: Calculate the control limits for R-chart.
VIEWStep 5: Draw the charts.
VIEWStep 6: Calculate the control limits for both charts for 30 days data.
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