A New Extended-Life Light Bulb Has an Average Service Life

question 20

Multiple Choice

A new extended-life light bulb has an average service life of 750 hours, with a standard deviation of
50 hours. The shape of this distribution is unknown. From a sample of 100 light bulbs, about what
Percent of the bulbs will last more than 700 hours?

• A) 100%
• B) 34.13%
• C) 84.13%
• D) 50%

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Definitions:

Fetal Period

The stage of human development that takes place from the ninth week after fertilization until the birth of the baby, characterized by rapid growth and development of organs and structures.

Socioemotional Process

The combination of social interactions and emotional experiences and how they influence an individual's development and behavior.

Life Theme

A recurring core issue or pattern that shapes an individual's decisions, actions, and life direction.

Eradication

The complete removal or destruction of something, often used in the context of eliminating a disease or pest.