[See Solution] Portable CD Player Lifetimes $\Lambda$ recent study of the lite span of portable compact disc players found the average to be $3.7$ years
Question: Portable CD Player Lifetimes $\Lambda$ recent study of the lite span of portable compact disc players found the average to be $3.7$ years with a standard deviation of $0.6$ year. It a random sample of 32 people who own CD players is selected, find the probability that the mean lifetime will be less than 3.4 years.
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