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Six 9 volt batteries are put on accelerated test until they

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Six 9 volt batteries are put on accelerated test until they fail. The variable recorded is hours of continuous use. The test results were: 19, 22, 18, 16, 25, and 20 hours.

An application calls for a battery life of at least 15 hours. Calculate the mean and standard deviation.

Reference no: EM13577099

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