The Manager of the Service Department of a Local Car

question 42

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 6 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) 4.778 to 8.066.
• C) 2.93 to 6.31.
• D) 22.833 to 65.059.

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Definitions:

Family Meals

Sharing meals among family members at home, which can foster better communication, nutrition, and eating habits.

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The act of watching content on a television, an activity that varies in impact depending on content and duration.

Suicide

The act of intentionally causing one's own death.

Gay and Lesbian

Terms used to describe individuals who are attracted to the same sex, with "gay" typically referring to men, and "lesbian" referring to women.