Mathematics, 06.08.2019 20:10, angeldawnfick

The lifetime of a certain type of battery is normally distributed with mean value 10 hours and standard deviation 1 hour. there are four batteries in a package. what lifetime value 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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The lifetime of a certain type of battery is normally distributed with mean value 10 hours and stand...