Valtec Electronics fills orders for its electronic components and parts by truck to customers through several distribution centers. A measure of its supply chain responsiveness is order fulfillment lead time, which is the number of days from when a company receives an order to when it is delivered to the customer. A distribution center manager has taken 20 samples of 5 orders each during the month and recorded the lead time for each as follows. Construct an Xbar chart and R-chart using 30 limits for this data and indicate if the process is in control.
Valtec Electronics fills orders for its electronic components and parts by truck to customers through several distribution centers. A measure of its supply chain responsiveness is order fulfillment lead time, which is the number of days from when a company receives an order to when it is delivered to the customer. A distribution center manager has taken 20 samples of 5 orders each during the month and recorded the lead time for each as follows. Construct an Xbar chart and R-chart using 30 limits for this data and indicate if the process is in control.
Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
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Transcribed Image Text:Valtec Electronics
Valtec Electronics fills orders for its electronic components and parts by truck to customers through
several distribution centers. A measure of its supply chain responsiveness is order fulfillment lead
time, which is the number of days from when a company receives an order to when it is delivered to
the customer. A distribution center manager has taken 20 samples of 5 orders each during the month
and recorded the lead time for each as follows.
Construct an Xbar chart and R-chart using 30 limits for this data and indicate if the process is in
control.
Load Time (Days)
Load Time (Days)
2.4
Samples
Samples
1
1.3
2.4
0.7
3.0
1.8
15
3.7
7.0
1.4
3.3
2
2.1
1.2
1.0
2.5
3.6
16
3.6
2.7
4.8
2.0
1.7
3
4.2
3.3
2.6
1.5
3.0
17
0.4
1.8
6.5
3.2
4.8
4
1.6
2.1
2.8
0.9
1.5
18
5.3
2.9
3.4
4.8
4.6
5
2.6
3.0
1.4
4.6
1.9
19
2.7
3.6
2.9
4.1
5.2
6
0.8
2.7
5.8
3.7
4.5
20
4.7
2.0
2.0
3.1
1.8
7
2.6
3.5
3.1
3.6
1.4
8
3.4
6.1
1.5
2.5
2.8
9
3.1
2.5
2.2
2.9
1.8
10
2.4
4.8
5.9
3.2
4.4
11
1.9
2.7
3.4
2.2
0.4
12
6.1
4.9
2.1
3.6
5.2
13
1.2
3.4
2.8
2.3
4.5
14
2.4
2.9
3.4
2.3
2.5
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