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OpenStudy (anonymous):
the life expectancy of a typical light bulb is normally distributed with a mean of 2100 hours and a standard deviation of 40 hours. what is the probability that a lightbulb will last between 1965 and 2165 hours?
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OpenStudy (anonymous):
@vishweshshrimali5
OpenStudy (anonymous):
OpenStudy (anonymous):
Im thinking D after
OpenStudy (vishweshshrimali5):
Sorry I can't help you much for this. I haven't studied statistics since last 2 years.
OpenStudy (vishweshshrimali5):
But even though let me give it a try.
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OpenStudy (anonymous):
Ok ;)
OpenStudy (vishweshshrimali5):
Yes D is correct.
OpenStudy (anonymous):
Yess thanks
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