A Company That Produces Computers Recently Tested the Battery in Its

question 69

Multiple Choice

A company that produces computers recently tested the battery in its latest laptop in six separate trials.The battery lasted 8.23,7.89,8.14,8.25,8.30,and 7.95 hours before burning out in each of the tests.Assuming the battery duration is normally distributed,construct a 95% confidence interval for the mean battery life in the new model.

• A) [7.9489,8.3045]
• B) [7.9575,8.2959]
• C) [7.9873,8.2661]
• D) [7.9912,8.2622]

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Definitions:

User Cost

The cost associated with using a capital asset, considering both the depreciation of the asset and the foregone interest that could have been earned by investing funds elsewhere.

Nonrenewable Resource

A natural resource that cannot be replenished at the same rate at which it is consumed.

Future

A term referring to events that have not yet occurred or financial contracts regarding assets to be delivered or transacted at a later date.

User Cost

The opportunity cost of using a durable good or natural resource, factoring in depreciation and the forgone interest that could have been earned if the money was invested elsewhere.