Question: 4. A cathode ray tube has a mean time between failures of 80 weeks. What is the probability that the unit will last for at

4. A cathode ray tube has a mean time between
4. A cathode ray tube has a mean time between failures of 80 weeks. What is the probability that the unit will last for at least 88 weeks? (Hint: See TABLE 45.1 in textbook) (2 points)

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