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2) The life of a coffee pot is approximately normally distributed with a mean of 5 years and standard deviation of 1.1 years. The manufacturer
2) The life of a coffee pot is approximately normally distributed with a mean of 5 years and standard deviation of 1.1 years. The manufacturer will repair or replace any defective coffee pot free of charge (including labor) while the pot is under warranty. For how many years should the company guarantee its coffee pots, if the manufacturer does not wish to replace more than 5% of them
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