A Manufacturer of Personal Computers Sets Tests Competing Brands and Finds

question 74

Multiple Choice

A manufacturer of personal computers sets tests competing brands and finds that the amounts of energy they require are normally distributed with a mean of 285 kwh and a standard deviation of 9.1 kwh. If the lowest 25% and the highest 30% are not included in a second round of tests,what are the upper and lower limits for the energy amounts of the remaining sets?

• A)[269.76 300.24]
• B)[269.76 289.78]
• C)[280.22 289.78]
• D)[280.22 300.24]

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Definitions:

Alcoholism

A chronic disease characterized by uncontrollable drinking and preoccupation with alcohol.

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The region of the brain located at the front of the frontal lobe, critical for decision making, social behavior, and personality expression.

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The process by which an organism's body increases in size and mass, often measured through changes in height, weight, and bone structure.

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