The average life of a small motor is 10 years with a


Question: The average life of a small motor is 10 years with a standard deviation of 2 years. Themanufacturer replaces free all motors that fail while under guarantee. If the manufactureris willing to replace only 3% of the motors that fail, how long a guarantee should heoffer? Assume lifetimes are normally distributed.

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Mathematics: The average life of a small motor is 10 years with a
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