Suppose the Life of a Particular Brand of Laptop Battery

question 65

Multiple Choice

Suppose the life of a particular brand of laptop battery is normally distributed with a mean of 8 hours and a standard deviation of 0.6 hours. What is the probability that the battery will last more than 9 hours before running out of power?

• A) 0.0478
• B) 0.4525
• C) 0.9525
• D) 1.6667

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