13. [-/1 Points] DETAILS SCALC9 8.5.010. (a) A type of lightbulb is labeled as having an average lifetime of 1000 hours.

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13 1 Points Details Scalc9 8 5 010 A A Type Of Lightbulb Is Labeled As Having An Average Lifetime Of 1000 Hours 1 (15.52 KiB) Viewed 11 times

13. [-/1 Points] DETAILS SCALC9 8.5.010. (a) A type of lightbulb is labeled as having an average lifetime of 1000 hours. It's reasonable to model the probability of failure of these bulbs by an exponential density function with mean μ-1000. (1) Use this model to find the probability that a bulb fails within the first 500 hours. (Round your answer to three decimal places) (i) Use this model to find the probability that a bulb burns for more than 800 hours. (Round your answer to three decimal places) (b) What is the median lifetime of these lightbulbs? (Round your answer to one decimal place.) hr Need Help? MY NOTES Head it ASK YOUR TEACHER PRACTICE ANOTHER