C K. 2. EXERCISE 1 A certain type of storage battery lasts, on average, 3.0 years with a variance of 0.25 year. O If the battery lives are normally distributed, find the probability that a given battery will last less than 2.3 years. 6. 7 8. 10 11 12 13 Solution: 14 15 16 17 18 19 20 22

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