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:

Cross-Sectional

A type of observational study design where data is collected from a population, or a representative subset, at one specific point in time.

Personality Development

The pattern of change in personality traits and behaviors over the lifespan, shaped by genetic, environmental, and experiential factors.

Social Factors

Elements within society, such as family, education, and cultural norms, that influence an individual's behavior and viewpoints.

Environmental Factors

Components external to the individual that can influence their behavior, development, and well-being, including physical, social, and cultural aspects.