Light Bulbs Are Normally Distributed with an Average Lifetime of 1000

question 108

Multiple Choice

Light bulbs are normally distributed with an average lifetime of 1000 hours and a standard deviation of 250 hours. The probability that a light bulb picked at random will last less than 1500 hours is about:

• A)97.72 percent.
• B)95.44 percent.
• C)75.00 percent.
• D)68.00 percent.

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Definitions:

Long-term Stream

A sustained flow or sequence of activities, processes, or outputs extending over a lengthy period.

ITQs

Individual Transferable Quotas, a system used in fisheries management where individual fishers are allocated a certain portion of the total allowable catch.

Limit Catches

Restrictions set on the amount or number of a particular fish or other species that can be legally caught and kept.

Least Costly

Referring to the method or option that incurs the lowest possible expense or expenditure while achieving the desired outcome or objective.