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Help!! 4.13. A tech company is testing the batteries of their new smartphones. Historically, smartphone battery life tends to be normally distributed with mean 3000

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4.13. A tech company is testing the batteries of their new smartphones. Historically, smartphone battery life tends to be normally distributed with mean 3000 mAh (milliampere hours) and standard deviation 273 mAh. Would it be unusual for the tech company to test a phone that lasts less than 2500 mAh

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