A pizza delivery service wants to track their delivery times. They take eight samples of four deliveries and record the following data. What are the upper and lower control limits of their X-bar chart? (Note: Although it looks similar, the data in the table below is different from the data in the table relating to the UCL and LCL for the R chart.)
A pizza delivery service wants to track their delivery times. They take eight samples of four deliveries and record the following data. What are the upper and lower control limits of their X-bar chart? (Note: Although it looks similar, the data in the table below is different from the data in the table relating to the UCL and LCL for the R chart.)
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
8
A pizza delivery service wants to track their delivery times. They take eight samples of four deliveries and record the following data. What are the upper and lower control limits of their X-bar chart? (Note: Although it looks similar, the data in the table below is different from the data in the table relating to the UCL and LCL for the R chart.)
| Sample # | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
| Item #1 | 21.1 | 20.2 | 24.6 | 22.6 | 23.7 | 20.9 | 22.4 | 20.7 |
| Item #2 | 22.2 | 20.6 | 20 | 20.7 | 24.1 | 23.9 | 24.6 | 24.4 |
| Item #3 | 23.0 | 24.5 | 23.2 | 23.0 | 20.7 | 22.8 | 23.0 | 22.8 |
| Item #4 | 20.0 | 23.5 | 25.5 | 25.0 | 20.7 | 23.2 | 23.3 | 24.5 |
| Sum | 86.3 | 88.8 | 93.3 | 91.3 | 89.2 | 90.8 | 93.3 |
92.4 |
Group of answer choices
25.2, 20.0
25.4, 20.0
23.9, 21.3
24.1, 21.1
Transcribed Image Text:A barbecue sauce producer sells their product in a 18-
ounce bottle. Their current process mean is 17.8 ounces
with a standard deviation of 0.20 ounces. If their
tolerance limits are set at 18 ounces plus or minus 1
ounce, what is the process capability index/ratio of the
bottle filling process?
O 1.33
O 2.0
O 0.91
O 1.0
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