(i) Determine the upper and lower control limits for an X-Bar chart and R-chart with a sample size of four. (ii) After the control chart was established a sample of four observations had the following times in seconds: 193, 259, 197, and 149. Is corrective action needed?

Practical Management Science
6th Edition
ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
Chapter10: Introduction To Simulation Modeling
Section10.2: Probability Distributions For Input Variables
Problem 1P: Use the RAND function and the Copy command to generate 100 random numbers. a. What fraction of the...
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Please answer both i and ii in the problem provided.!?
can open HW2 here
2 / 2
1
92% +
Alex
Marie
Linda
Ann
3. The time to make beds at a motel should fall into an agreed-on range of times. A
sample of four maids was selected, and the time needed to make a bed was
observed on three different occasions:
Maid
+
122
130
200
163
Service time (seconds)
Sample 1
90
111
180
155
Sample 2
152
140
175
141
Sample 3
Transcribed Image Text:can open HW2 here 2 / 2 1 92% + Alex Marie Linda Ann 3. The time to make beds at a motel should fall into an agreed-on range of times. A sample of four maids was selected, and the time needed to make a bed was observed on three different occasions: Maid + 122 130 200 163 Service time (seconds) Sample 1 90 111 180 155 Sample 2 152 140 175 141 Sample 3
(i) Determine the upper and lower control limits for an X-Bar chart and R-chart
with a sample size of four.
(ii) After the control chart was established a sample of four observations had the
following times in seconds: 193, 259, 197, and 149. Is corrective action
needed?
Transcribed Image Text:(i) Determine the upper and lower control limits for an X-Bar chart and R-chart with a sample size of four. (ii) After the control chart was established a sample of four observations had the following times in seconds: 193, 259, 197, and 149. Is corrective action needed?
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