If Light Bulbs Have Lives That Are Normally Distributed with a Mean

question 36

Multiple Choice

If light bulbs have lives that are normally distributed with a mean of 2500 hours and a standard deviation of 500 hours, use the 68-95-99.7 rule to approximate the percentage of light bulbs having a life between 2000 hours and 3500 hours?

• A) About 13.5%
• B) About 50%
• C) About 68%
• D) About 81.5%

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Definitions:

Cannon-Bard Theory

A theory of emotion that argues that physiological arousal and the experience of emotion happen simultaneously, yet independently.

Cultural Heritage

The legacy of physical artifacts and intangible attributes of a group or society passed down from generation to generation, including traditions, languages, practices, and objects.

Learned Preferences

Preferences or tastes developed over time through experience or exposure, as opposed to innate preferences.

Display Rules

Culturally determined norms that dictate the appropriate expressions of emotions in various social situations.