A Crew of Mechanics at the Department of Transportation Garage

question 119

Multiple Choice

A crew of mechanics at the Department of Transportation garage make minor repairs to snowplows during the winter. The snowplows break down at an average rate of 4 vehicles per day and breakdowns are distributed according to the Poisson distribution. The mechanic can service an average of 7 vehicles per day with a repair time distribution that approximates a negative exponential distribution. Assume an 8 hour day.
-What is the expected average number of snowplows in the garage (waiting for repair and being repaired) ?

• A) 1
• B) 1.33
• C) 2
• D) 2.52

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Definitions:

In Situ Conservation

The conservation and protection of genetic resources in their natural habitats.

Biodiversity Hotspot

Regions that are significantly rich in biodiversity and are threatened with destruction, necessitating conservation efforts.

In Situ Conservation

The conservation of genetic resources in natural populations of plant or animal species, such as the conservation of endangered species in their natural habitat.

Ex Situ Conservation

The strategy of conserving biological diversity by preserving genetic material or entire organisms outside their natural habitats.