A Manager Wishes to Build a 3-Sigma Range Chart for a Process

question 63

Multiple Choice

A manager wishes to build a 3-sigma range chart for a process. The sample size is five, the mean of sample means is 16.01, and the average range is 5.3. From Table S6.1, the appropriate value of D₃ is 0, and D₄ is 2.115. The UCL and LCL for this range chart are

• A) 33.9 and 11.2
• B) 33.9 and 0
• C) 11.2 and 0
• D) 6.3 and 0
• E) 31.91 and 0.11

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Definitions:

Spine

The central support structure of the skeleton, made up of vertebrae, providing structural support and protecting the spinal cord.

Stimulate Qi

A concept in traditional Chinese medicine referring to practices aimed at enhancing or balancing the flow of 'qi' or life energy throughout the body.

Traditional Chinese Medicine (TCM)

A holistic and ancient system of health care originating in China, using techniques such as herbal medicine, acupuncture, and qigong to prevent, diagnose, and treat illness.

Tui Na

A form of Chinese manipulative therapy often used in conjunction with acupuncture, moxibustion, fire cupping, Chinese herbalism, tai chi, and qigong.