Find the probability that a light bulb will burn out
The number of hours a 100 watt bulb will operate before burning out is approximately normally distributed with standard deviation σ=50.
a. if the mean µ=900, what is the probability that a light bulb will burn out in less than 966 hours of use?
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if the mean µ=900, what is the probability that a light bulb will burn out in less than 966 hours of use?
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