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

question 57

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:

Biopsychosocial Perspective

A holistic approach to understanding human behavior and health outcomes by integrating biological, psychological, and social factors.

Sociocultural Stresses

The pressures and challenges that arise from social and cultural expectations and norms.

Eclectic Approaches

Psychotherapeutic techniques that integrate methods and theories from multiple therapy schools to tailor treatment to an individual's needs.

Neurotransmitters

Chemical substances in the brain that transmit signals between neurons, influencing various functions such as mood, sleep, and appetite.