The Expected (Mean)life of a Particular Type of Light Bulb

question 10

Multiple Choice

The expected (mean) life of a particular type of light bulb is 1,000 hours with a standard deviation of 50 hours. The life of this bulb is normally distributed. What is the probability that a randomly selected bulb would last longer than 1150 hours?

• A) 0.4987
• B) 0.9987
• C) 0.0013
• D) 0.5013
• E) 0.5513

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Definitions:

Group Dynamics

Interactions and processes that take place among the members of a team.

Conceal

To hide something or prevent it from being seen or known.

Team Maintenance

Activities and behaviors that support the social and psychological well-being of a team, ensuring its continued effectiveness.

Task-Oriented

Focused on completing specific tasks or objectives rather than on broader or more abstract goals.