The Time of a Call to a Technical Support Line

question 133

Multiple Choice

The time of a call to a technical support line is uniformly distributed between 2 and 10 minutes. What are the mean and variance of this distribution?

• A) 6 minutes and 2.3094 (minutes) 2
• B) 6 minutes and 5.3333 (minutes) 2
• C) 6 minutes and 5.3333 minutes
• D) 8 minutes and 2.3094 minutes

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Definitions:

Pulmonary Trunk

The major blood vessel which splits into the left and right pulmonary arteries, carrying deoxygenated blood from the heart to the lungs.

Pulmonary Arteries

Blood vessels that carry blood from the heart to the lungs for oxygenation.

Left Atrium

One of the four chambers of the heart, receiving oxygenated blood from the lungs and pumping it into the left ventricle.

Deoxygenated Blood

Blood that has released its oxygen to the body's cells and is returning to the heart to be sent to the lungs for oxygenation.