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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

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 0.6 years. Find the probability that a randomly selected portable MP3 player will have a replacement time less than 2.2 years? P(X Next Question

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