Replacement Times for TV Sets Are Normally Distributed with a Mean

question 80

Short Answer

Replacement times for TV sets are normally distributed with a mean of 8.2 years and a standard deviation of 1.1 years, (based on data from "Getting Things Fixed," Consumer Reports).

-The probability that a randomly selected TV will be replaced after more than 10.0 years is______

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Definitions:

Fatty Acid

Carboxylic acids with a long aliphatic chain, which can be either saturated or unsaturated, and are a key component of lipids in the diet.

Carnauba Wax

A hard, natural wax obtained from the leaves of the carnauba palm, used in a wide range of products including car waxes, polishes, and cosmetics.

Paraffin Wax

A soft, colorless solid derived from petroleum, coal, or oil shale that's used in candles, cosmetics, and for waterproofing.

IR Stretch

Infrared absorption by a molecule caused by the stretching vibrations of bonds, typically used in spectroscopy to identify functional groups.