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https://blackboard.forsythtech.edu/ultra/courses/_32237_1/c Company XYZ know that replacement times for the portable MP3 players it produces are normally distributed with a mean of 4.1 years and a

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https://blackboard.forsythtech.edu/ultra/courses/_32237_1/c Company XYZ know that replacement times for the portable MP3 players it produces are normally distributed with a mean of 4.1 years and a standard deviation of 0.4 years. Find the probability that a randomly selected portable MP3 player will have a replacement time less than 3.1 years? P(X

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