SOLUTION: A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 110 hours, and distribution approximated by a normal curve. Use the table below t
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Question 1180304: A company installs 5000 light bulbs, each with an average life of 500 hours, standard deviation of 110 hours, and distribution approximated by a normal curve. Use the table below to find the percentage of the bulbs that can be expected to last greater than 690 hours. Answer by ikleyn(52781) (Show Source):
