The Chief Design Engineer for Colonial Warning Systems Wants to Know

question 54

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.If the pressure drops below the desired level,what is the probability the system will perform reliably for one hour?

• A).04
• B).4
• C).6
• D).64
• E).96

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Definitions:

Creditors

Individuals or entities that have lent goods, money, or services to a company or person, expecting to be repaid at a future date.

Fiscal Year

A one-year period used by governments and businesses for accounting purposes, which may not coincide with the calendar year.

Property Tax

A levy on property that the owner is required to pay, usually levied by local governments based on the property's assessed value.

Prepaid Property Tax

An expense that has been paid in advance for property taxes, classified as a current asset on the balance sheet until the period the tax covers has passed.