If X, the Time (In Minutes)to Complete an Oil Change $\le$

question 89

Multiple Choice

If x, the time (in minutes) to complete an oil change job at a certain auto service station, is uniformly distributed over the interval 20 to 30, inclusively (20 $\le$ x $\le$ 30) , then the standard deviation of this distribution is ___.

• A)unknown
• B)8.33
• C)0.833
• D)2.89
• E)1.89

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Definitions:

Mislead

To provide false or misleading information that causes someone to form an incorrect belief or conclusion.

Statute of Limitations

A regulation establishing the longest period after an occurrence within which legal actions must be started.

Malpractice

Failure by a professional person, such as a doctor or lawyer, to perform his or her duties competently, resulting in harm to a client or patient.

Metal Fabrication

The process of building machines and structures from raw metal materials, including cutting, bending, and assembling processes.