A cellphone retailer uses a large number of common batteries in one of its most popular lines
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Question:
A cellphone retailer uses a large number of common batteries in one of its most popular lines of phones. After testing a large number of them, they found that the average time to failure is 1/l =7800 hours. a. What is the probability that a component will fail within 1000 hours? b. After 7800 hours?
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