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OpenStudy (anonymous):
The life expectancy of a typical lightbulb is normally distributed with a mean of 3,000 hours and a standard deviation of 38 hours. What is the probability that a lightbulb will last between 2,975 and 3,050 hours? 0.5565 0.6520 0.3545 0.6250
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OpenStudy (anonymous):
you gotta be kidding!!
OpenStudy (anonymous):
Most serious xD
OpenStudy (anonymous):
we will cheat, give me a moment
OpenStudy (anonymous):
okay c:
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OpenStudy (anonymous):
looks like \(.6506\)
OpenStudy (anonymous):
Well, We have .6520?
OpenStudy (anonymous):
i guess go with that one
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