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Mathematics, 20.12.2019 05:31 icee13
Amechanic sells a brand of automobile tire that has a life expectancy that is normally distributed, with a mean life of 31 comma 000 miles and a standard deviation of 2800 miles. he wants to give a guarantee for free replacement of tires that don't wear well. how should he word his guarantee if he is willing to replace approximately 10% of the tires?
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