It Is Assumed That the Time Failures for an Electronic

question 14

Multiple Choice

It is assumed that the time failures for an electronic component are exponentially distributed with a mean of 50 hours between consecutive failures. If one extra component is installed as a backup, what is the probability of at least one of the two components working for at least 60 hours?

• A) About 0.51
• B) About 0.09
• C) About 0.06
• D) About 0.70

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Definitions:

Cerebral Cortex

The outer layer of the cerebrum, playing a key role in memory, attention, perception, cognition, awareness, thought, language, and consciousness.

Amygdala

A section of the brain's limbic system involved in emotion regulation, especially fear and pleasure.

Limbic System

A complex system of nerves and networks in the brain, associated with emotions and drives, such as hunger and sexual desire.

Reticular Formation

A complex network of nerve pathways in the brainstem that plays a key role in controlling arousal and consciousness.