Instruction 18-9 A Quality Control Analyst for a Light Bulb Manufacturer Is

question 22

Multiple Choice

Instruction 18-9
A quality control analyst for a light bulb manufacturer is concerned that the time it takes to produce a batch of light bulbs is too erratic.Accordingly,the analyst randomly surveys 10 production periods each day for 14 days and records the sample mean and range for each day.
-Referring to Instruction 18-9,suppose the analyst constructs an R chart to see if the variability in production times is in control.What is the lower control limit for this R chart?

• A)4.84
• B)2.98
• C)1.34
• D)3.37

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Definitions:

Categorical Information

refers to data or information that is divided into specific categories or groups based on shared characteristics.

Dimensional Information

Data or knowledge that can be measured along different dimensions or scales, often used in assessing or categorizing phenomena.

Validity

The extent to which a concept, conclusion or measurement is well-founded and corresponds accurately to the real world.

Reliability

In research and testing, it refers to the consistency of a measure or instrument; the degree to which an assessment tool produces stable and consistent results over time.