A System Is Composed of Two Parts Which Must Both

question 8

Multiple Choice

A system is composed of two parts which must both operate in order for the system to perform as intended.The parts have reliabilities of .6 and .5.There is an identical backup for each part.The backup system is connected to the main system by a switch which has a reliability of .9.The probability that the overall system will operate is closest to:

• A).30
• B).40
• C).50
• D).60
• E).70

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Definitions:

Critical Habitats

Areas identified as essential for the conservation of endangered or threatened species, requiring special management and protection.

COSEWIC

The Committee on the Status of Endangered Wildlife in Canada, a group that assesses and classifies the conservation status of wildlife species at risk of extinction.

Classified

Information, documents, or materials that have been officially designated as confidential and restricted in terms of access and distribution.

Threatened

A conservation status indicating that a species is likely to become endangered within the foreseeable future throughout all or a significant portion of its range.