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

question 7

Multiple Choice

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

• A)50
• B)25
• C)10
• D)15
• E)5

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Definitions:

Voluntary

Undertaken by choice or without coercion.

HIV Infection

A viral infection caused by the human immunodeficiency virus, which attacks the immune system and can lead to acquired immunodeficiency syndrome (AIDS) if not treated.

Diagnosis

The process of identifying a disease or condition from its signs and symptoms, using a variety of assessments and tests.

Tests

Assessments or evaluations conducted to measure knowledge, skill, health, quality, or performance.