Probability that average life will be less than eight years

Reference no: EM13117652

The lifetime of a DVD player is normally distributed with a mean of 7 years and a standard deviation of 55 months. In a sample of 32 DVD players, what is the probability the average life will be less than 8 years (96 months)? (please round your answer to 4 decimal places).

Reference no: EM13117652

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