Mathematics, 16.10.2020 07:01, silasjob09
The lifetime of a 9-volt battery in constant use has an approximately Normal distribution with a mean of 516 hours and a standard deviation of 20 hours. Which of the following is the approximate lifetime of a battery that lasts longer than 90% of all batteries?
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Mathematics, 21.06.2019 19:30, bigboss2984
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The lifetime of a 9-volt battery in constant use has an approximately Normal distribution with a mea...
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