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%
Correct Answer:
Verified
Correct Answer:
Verified
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