SCENARIO 19-4 A Factory Supervisor Is Concerned That the Time It Takes

question 61

Multiple Choice

SCENARIO 19-4
A factory supervisor is concerned that the time it takes workers to complete an important production task (measured in seconds) is too erratic and adversely affects expected profits.The supervisor proceeds by randomly sampling 5 individuals per hour for a period of 10 hours.The sample mean and range for each hour are listed below.
She also decides that lower and upper specification limit for the critical-to-quality variable should be 10 and 30 seconds,respectively.
-Referring to Scenario 19-4,suppose the supervisor constructs an R chart to see if the variability in collection times is in-control.What are the lower and upper control limits for this R chart?

• A)- 2.33,43.13
• B)- 2.28,42.28
• C)0,42.28
• D)0,43.13

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Definitions:

Intact Skin

Skin that remains unbroken and healthy, effectively serving its function as a barrier against external harm.

Intravenous Infusion

The administration of liquid substances directly into a vein as a therapeutic treatment.

Hepatitis B

A viral infection that affects the liver, transmitted through contact with infected bodily fluids, which can lead to chronic liver disease, cirrhosis, and liver cancer.

Nonactivated Safe Needle

A needle design that includes safety features to prevent needle-stick injuries but requires manual activation by the healthcare provider.