The Chief Design Engineer for Colonial Warning Systems Wants to Know

question 46

Multiple Choice

The chief design engineer for Colonial Warning Systems wants to know the reliability of a two-lamp device intended to warn the operator of potential problems with a commercial steam kettle.One (either) lamp is to be lit if steam pressure drops below the desired level,and two (both) are to be lit if temperature drops below a desired level.His supplier estimates that a lamp has a failure rate of .2 per hour of operation,and a mean wear-out time of seven years with a standard deviation of eight months.What is the probability that a lamp will perform reliably for one hour?

• A)0
• B).2
• C).8
• D).9
• E)1

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Definitions:

Individual Rights

The basic entitlements and freedoms that belong to every person, typically upheld by law and societal norms, including rights to privacy, speech, and equal treatment.

Poverty Rate

The percentage of the population whose income falls below the threshold deemed necessary to cover basic living costs, determining the level of poverty.

Poverty Line

A threshold level of income set by governments or organizations, below which individuals or families are considered to be living in poverty.

Distribution Of Income

The distribution of income is the way in which a country's total earnings are divided among its population, affecting economic inequality.