The life expectancy of Timely brand watches is normally distributed with a mean of four years and a standard deviation of eight months. a. What is the probability that a randomly selected watch will be in working condition for more than five years? (Round to four decimal places.) b. The company has a three-year warranty period on their watches. What percentage of their watches will be in operating condition after the warranty period? (Round to four decimal places.) c. What is the minimum and the maximum life expectancy of the middle 80% of the watches? (Round to two decimal places.) Type the Probability Expression: Find the Solution: x1 =

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