Amanager wishes to build a control chart for a process. A total of five (05) samples are collected with four (04) observations within each sample. The sample means (X-bar) are; 15.36,14.61,16.36,20.28, and 15.77 respectively. Also, the corresponding ranges are; 10.79, 8.37, 2.81,8.17, and 3.31 respectively. The lower and upper control limits of the x-bar chart are respectively O a. 11.59,21.36 O b. 16.55, 11.47 Oc. 18.55, 13.47 O d. None is correct Oe. 12.40, 19.72

Practical Management Science
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ISBN:9781337406659
Author:WINSTON, Wayne L.
Publisher:WINSTON, Wayne L.
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A manager wishes to build a control chart for a process. A total of five (05) samples are collected with four (04) observations within each sample. The
sample means (X-bar) are; 15.36,14.61,16.36,20.28, and 15.77 respectively. Also, the corresponding ranges are; 10.79, 8.37, 2.81,8.17, and 3.31
respectively. The lower and upper control limits of the x-bar chart are
,respectively
O a. 11.59, 21.36
O b. 16.55, 11.47
Oc. 18.55, 13.47
O d. None is correct
O .
12.40, 19.72
Transcribed Image Text:A manager wishes to build a control chart for a process. A total of five (05) samples are collected with four (04) observations within each sample. The sample means (X-bar) are; 15.36,14.61,16.36,20.28, and 15.77 respectively. Also, the corresponding ranges are; 10.79, 8.37, 2.81,8.17, and 3.31 respectively. The lower and upper control limits of the x-bar chart are ,respectively O a. 11.59, 21.36 O b. 16.55, 11.47 Oc. 18.55, 13.47 O d. None is correct O . 12.40, 19.72
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