The Flashlight Batteries Produced by One of the Northern Manufacturers

question 124

Essay

The flashlight batteries produced by one of the northern manufacturers are known to have an average life of 60 hours with a standard deviation of 4 hours.Use Chebyshev's theorem to answer the following questions.
a.At least what percentage of flashlights will have a life of 54 to 66 hours?
b.At least what percentage of the batteries will have a life of 52 to 68 hours?
c.Determine an interval for the batteries' lives that will be true for at least 80% of the batteries.(Hint: First compute the Z-score. )

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Definitions:

Skeletal

Relating to or functioning as a part of the skeleton, the internal framework that supports the body.

Muscular

Related to or affecting the muscles or the muscular system.

Proximal

Proximal refers to being closer to the center of the body or the point of attachment, as opposed to distal, which indicates a farther position.

Lateral

Pertaining to the side; situated at, proceeding from, or directed to the side.