Question: The average life of a light bulb is 500 hours. Find

1. the probability that a bulb will last more than 1,000 hours
2. the probability that a bulb will last less than 100 hours
3. the median life
4. the probability that a bulb will last exactly 500 hours
5. the 95 Percentile

( Note: From the table on page 722 of your textbook, e^ ( -3.0) is almost 0.05, so the 95 percentile life would be -3.0/0.002 = 1,500 hours)

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