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Mathematics, 04.11.2020 19:00 machucagm01

PRACTICE ANOTHER The lifetime of a certain type of battery is normally distributed with mean value 11 hours and standard deviation 1 hour. There are nine batteries in a package. What lifetime value (in hours) is such that the total lifetime of all batteries in a package exceeds that value for only 5% of all packages

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PRACTICE ANOTHER The lifetime of a certain type of battery is normally distributed with mean value 1...
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