Mathematics, 30.04.2021 03:50 ryandelanomartinez
A manufacturer claims that a new cell phone battery last 10.5 hours. A consumer agency believes that this claim is incorrect and runs a test on a sample of size 50. The sample mean is 9.6 hours with a standard deviation of 1.3 Is the company’s claim a valid one?
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A manufacturer claims that a new cell phone battery last 10.5 hours. A consumer agency believes that...
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