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Mathematics, 19.12.2019 00:31 ladybugys

The life in hours of a battery is known to be approximately normally distributed, with standard deviation hours. a random sample of 10 batteries has a mean life of x overbar equals 40.5 hours. (a) is there evidence to support the claim that battery life exceeds 40 hours

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The life in hours of a battery is known to be approximately normally distributed, with standard devi...

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