The Manager of the Service Department of a Local Car

question 32

Multiple Choice

The manager of the service department of a local car dealership has noted that the service times of a sample of 30 new automobiles has a standard deviation of 5 minutes. A 95% confidence interval estimate for the standard deviation of the service times (in minutes) for all their new automobiles is

• A) 16.047 to 45.722.
• B) 15.857 to 45.180.
• C) 3.982 to 6.722.
• D) 22.833 to 65.059.

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Definitions:

Glaucoma

A disease of the eye characterized by increased intraocular pressure.

Ocular Discharge

A fluid that comes from the eye, often a sign of infection, irritation, or other eye conditions.

Nasal Polyps

are noncancerous growths on the lining of nasal passages or sinuses, leading to breathing difficulties, loss of smell, and frequent infections.

Surgical Removal

The process of operating to remove a part of the body or a foreign object.