SOLUTION: The burning times of electric bulbs approximate a normal curve with a mean of 1200 hours and a standard deviation of 120 hours. if a large number of new lights are installed at the

Question 1168635: The burning times of electric bulbs approximate a normal curve with a mean of 1200 hours and a standard deviation of 120 hours. if a large number of new lights are installed at the same time (possibly along a newly opened highway), at what time will?
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
your question is incomplete.
please review the problem and rewrite it.
at what time will what happen?
that part is missing.

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