TABLE 18-3 A Quality Control Analyst for a Light Bulb Manufacturer Is

question 42

Multiple Choice

TABLE 18-3
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 Table 18-3,suppose the sample mean and range data were based on 11 observations per day instead of 10.How would this change affect the lower and upper control limits of the R chart?

• A)LCL would increase; UCL would decrease.
• B)LCL would remain the same; UCL would decrease.
• C)Both LCL and UCL would remain the same.
• D)LCL would decrease; UCL would increase.

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Definitions:

Contamination

The presence of unwanted substances or microorganisms in a material or environment, potentially causing harm or pollution.

Work In A Dark Area

Conducting tasks or operations in a location with low light levels, which may necessitate the use of additional lighting equipment for visibility.

Due Date

The specific day by which a task, obligation, or payment is expected to be completed or fulfilled.

Gross Collection Ratio

Includes the total payments received by a practice for a specific period of time, not including any write-offs. The gross collection ratio can be calculated by taking the total payments for the specific period divided by the total charges, again without considering write-offs.