Life Tests Performed on a Sample of 13 Batteries of a New

question 83

Multiple Choice

Life tests performed on a sample of 13 batteries of a new model indicated: (1) an average life of 75 months, and (2) a standard deviation of 5 months.Other battery models, produced by similar processes, have normally distributed life spans.The 90% confidence interval for the population mean life of the new model is _________.

• A)66.78 to 83.23
• B)72.72 to 77.28
• C)72.53 to 77.47
• D)66.09 to 83.91
• E)73.34 to 76.25

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Definitions:

Restorers

Professionals or substances involved in the restoration or conservation of artifacts, artworks, or structures to their original condition.

Open Source

A type of software where the source code is made available to the public, enabling anyone to view, modify, and distribute the software.

Freeware

Software that is available for use at no cost, though it may have limited functionality compared to paid versions.

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Stands for Software as a Service, a model of software delivery where applications are hosted by a service provider and made available to users over the internet.