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Burns Appliance Co. offers a replacement warranty on their toaster ovens, which have a mean lifespan of 8.5 years, with a standard deviation of 0.8
Burns Appliance Co. offers a replacement warranty on their toaster ovens, which have a mean lifespan of 8.5 years, with a standard deviation of 0.8 years. How long a warranty would they establish if they could only afford to repair no more than 2.5% of the toaster ovens they make?
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