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Mrs. Crabapple has a class with three students, and she has had four quizzes so far this semester. She has created control charts to determine if the variation in students' scores from quiz to quiz is exhibiting only natural variation. Each of the quiz scores are shown below. The upper and lower control limits for the x-bar chart are 109.6 and 34.9, respectively. The upper and lower control limits for the R chart are 93.95 and 0, respectively. Quiz Bart Lisa Nelson 1 75 100 50 2 62 82 72 3 90 90 90 4 60 86 10 Is the process in control? OA. Yes OB. No

Mrs. Crabapple has a class with three students, and she has had four quizzes so far this semester. She has created control charts to determine if the variation in students' scores from quiz to quiz is exhibiting only natural variation. Each of the quiz scores are shown below. The upper and lower control limits for the x-bar chart are 109.6 and 34.9, respectively. The upper and lower control limits for the R chart are 93.95 and 0, respectively. Quiz Bart Lisa Nelson 1 75 100 50 2 62 82 72 3 90 90 90 4 60 86 10 Is the process in control? OA. Yes OB. No

Practical Management Science
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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Mrs. Crabapple has a class with three students, and she has had four quizzes so far this semester. She has created control charts to determine if the variation in students’ scores from quiz to quiz is exhibiting only natural variation. Each of the quiz scores is shown below. The upper and lower control limits for the x-bar chart are 109.6 and 34.9, respectively. The upper and lower control limits for the R chart are 93.95 and 0, respectively. | Quiz | Bart | Lisa | Nelson | |------|------|------|--------| | 1 | 75 | 100 | 50 | | 2 | 62 | 82 | 72 | | 3 | 90 | 90 | 90 | | 4 | 60 | 86 | 10 | **Is the process in control?** - A. Yes - B. No In this context, control charts are used to monitor the variation in student scores. There are no diagrams or graphs provided in the image.
Transcribed Image Text:Mrs. Crabapple has a class with three students, and she has had four quizzes so far this semester. She has created control charts to determine if the variation in students’ scores from quiz to quiz is exhibiting only natural variation. Each of the quiz scores is shown below. The upper and lower control limits for the x-bar chart are 109.6 and 34.9, respectively. The upper and lower control limits for the R chart are 93.95 and 0, respectively. | Quiz | Bart | Lisa | Nelson | |------|------|------|--------| | 1 | 75 | 100 | 50 | | 2 | 62 | 82 | 72 | | 3 | 90 | 90 | 90 | | 4 | 60 | 86 | 10 | **Is the process in control?** - A. Yes - B. No In this context, control charts are used to monitor the variation in student scores. There are no diagrams or graphs provided in the image.
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