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Mathematics, 30.08.2019 00:20 vinnay17

Arandom sample of 56 lithium batteries has a mean life of 645 hours with a population standard deviation of 31 hours. compute the 95% confidence interval for mu. a. (636.9, 653.1) b. (712.0, 768.0) c. (539.6, 551.2) d. (112.0, 118.9)

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