A long-life flood lamp has a lifetime that is normally distributed with a mean of 10,000 hours
Question:
a. What percentage of the flood lamps would last for more than 12,000 hours?
b. What lifetime should the manufacturer advertise for these lamps so that only 2% will burn out before the advertised lifetime?
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Normal distribution 10000 and 2525 a With tables The percentage of the flood l...View the full answer
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